// Heads up! August 2003  - Geir B�kholt
// This file now requires the javascript variable portal_url to be set 
// in the plone_javascript_variables.js file. Any other variables from Plone
// that you want to pass into these scripts should be placed there.

/* <dtml-var "enableHTTPCompression(request=REQUEST, debug=1, js=1)"> (this is for http compression) */

function drawPrintButton()
    {
    if(document.getElementById)
        {
        var printButton = document.getElementById('documentActions');
        if(printButton)
            {
            printButton.innerHTML += '<li><a href="#" onclick="window.print(); return false"><img src="/print_icon.gif" alt="Print this page" title="Print this page" height="16" width="16"></a></li>';
            }
        }
    }

function registerPloneFunction(func){
    // registers a function to fire onload. 
	// Turned out we kept doing this all the time
	// Use this for initilaizing any javascript that should fire once the page has been loaded. 
	// 
    if(document.getElementById)
        {
		    if (window.addEventListener) window.addEventListener("load",func,false);
		    else if (window.attachEvent) window.attachEvent("onload",func);   
		}
  }

function unRegisterPloneFunction(func){
    // uregisters a previous function to fire onload. 
    if(document.getElementById)
        {
		    if (window.removeEventListener) window.removeEventListener("load",func,false);
		    else if (window.detachEvent) window.detachEvent("onload",func);   
		}
  }

function getContentArea(){
	// to end all doubt on where the content sits. It also felt a bit silly doing this over and over in every
	// function, even if it is a tiny operation. Just guarding against someone changing the names again, in the name
	// of semantics or something.... ;)
    if(document.getElementById)
        {
			node =  document.getElementById('region-content')
			if (! node){
				node = document.getElementById('content')
				}
		}
	return node
	}

function wrapNode(node, wrappertype, wrapperclass){
    // utility function to wrap a node "node" in an arbitrary element of type "wrappertype" , with a class of "wrapperclass"
    if(document.getElementById)
        {
		    wrapper = document.createElement(wrappertype)
		    wrapper.className = wrapperclass;
		    innerNode = node.parentNode.replaceChild(wrapper,node);
		    wrapper.appendChild(innerNode)
		}
}
  
// The calendar popup show/hide:

    function showDay(date) {
    if(document.getElementById)
        {
        document.getElementById('day' + date).style.visibility = 'visible';
        return true;
		}
    }    
    function hideDay(date) {
    if(document.getElementById)
        {
        document.getElementById('day' + date).style.visibility = 'hidden';
        return true;
		}
    }



	
// Focus on error or tabindex=1 
function setFocus() {
    if(document.getElementById)
        {
		    var xre = new RegExp(/\berror\b/);
		    // Search only forms to avoid spending time on regular text
		    for (var f = 0; (formnode = document.getElementsByTagName('form').item(f)); f++) {
		        // Search for errors first, focus on first error if found
		        for (var i = 0; (node = formnode.getElementsByTagName('div').item(i)); i++) {
		            if (xre.exec(node.className)) {
		                for (var j = 0; (inputnode = node.getElementsByTagName('input').item(j)); j++) {
		                    inputnode.focus();
		                    return;   
		                }
		            }
		        }
		        // If no error, focus on input element with tabindex 1
		        
		        
		        // uncomment to reactivate
		        // this part works as intended, but there are too many places where this function causes pain, moving 
		        // focus away from a field in whuch the user is already typing
		        
		        //for (var i = 0; (node = formnode.getElementsByTagName('input').item(i)); i++) {
		         //   if (node.getAttribute('tabindex') == 1) {
		         //       node.focus();
		         //        return;   
		         //   }
		        //}
		    }
		}
}

if(document.getElementById)
    {

		registerPloneFunction(setFocus)
}




/********* Table sorter script *************/
// Table sorter script, thanks to Geir B�kholt for this.
// DOM table sorter originally made by Paul Sowden 

function compare(a,b)
{
    if(document.getElementById)
        {
		    au = new String(a);
		    bu = new String(b);
		
		    if (au.charAt(4) != '-' && au.charAt(7) != '-')
		    {
		    var an = parseFloat(au)
		    var bn = parseFloat(bu)
		    }
		    if (isNaN(an) || isNaN(bn))
		        {as = au.toLowerCase()
		         bs = bu.toLowerCase()
		        if (as > bs)
		            {return 1;}
		        else
		            {return -1;}
		        }
		    else {
		    return an - bn;
		    }
		}
}



function getConcatenedTextContent(node) {
    if(document.getElementById)
        {
	    var _result = "";
		  if (node == null) {
			    return _result;
		  }
	    var childrens = node.childNodes;
	    var i = 0;
	    while (i < childrens.length) {
	        var child = childrens.item(i);
	        switch (child.nodeType) {
	            case 1: // ELEMENT_NODE
	            case 5: // ENTITY_REFERENCE_NODE
	                _result += getConcatenedTextContent(child);
	                break;
	            case 3: // TEXT_NODE
	            case 2: // ATTRIBUTE_NODE
	            case 4: // CDATA_SECTION_NODE
	                _result += child.nodeValue;
	                break;
	            case 6: // ENTITY_NODE
	            case 7: // PROCESSING_INSTRUCTION_NODE
	            case 8: // COMMENT_NODE
	            case 9: // DOCUMENT_NODE
	            case 10: // DOCUMENT_TYPE_NODE
	            case 11: // DOCUMENT_FRAGMENT_NODE
	            case 12: // NOTATION_NODE
	                // skip
	                break;
	        }
	        i ++;
	    }
	  	return _result;
	}
}

function sort(e) {
    if(document.getElementById)
        {
	    var el = window.event ? window.event.srcElement : e.currentTarget;
	
	    // a pretty ugly sort function, but it works nonetheless
	    var a = new Array();
	    // check if the image or the th is clicked. Proceed to parent id it is the image
	    // NOTE THAT nodeName IS UPPERCASE
	    if (el.nodeName == 'IMG') el = el.parentNode;
	    //var name = el.firstChild.nodeValue;
	    // This is not very robust, it assumes there is an image as first node then text
	    var name = el.childNodes.item(1).nodeValue;
	    var dad = el.parentNode;
	    var node;
	    
	    // kill all arrows
	    for (var im = 0; (node = dad.getElementsByTagName("th").item(im)); im++) {
	        // NOTE THAT nodeName IS IN UPPERCASE
	        if (node.lastChild.nodeName == 'IMG')
	        {
	            lastindex = node.getElementsByTagName('img').length - 1;
	            node.getElementsByTagName('img').item(lastindex).setAttribute('src',portal_url + '/arrowBlank.gif');
	        }
	    }
	    
	    for (var i = 0; (node = dad.getElementsByTagName("th").item(i)); i++) {
	        var xre = new RegExp(/\bnosort\b/);
	        // Make sure we are not messing with nosortable columns, then check second node.
	        if (!xre.exec(node.className) && node.childNodes.item(1).nodeValue == name) 
	        {
	            //window.alert(node.childNodes.item(1).nodeValue;
	            lastindex = node.getElementsByTagName('img').length -1;
	            node.getElementsByTagName('img').item(lastindex).setAttribute('src',portal_url + '/arrowUp.gif');
	            break;
	        }
	    }
	
	    var tbody = dad.parentNode.parentNode.getElementsByTagName("tbody").item(0);
	    for (var j = 0; (node = tbody.getElementsByTagName("tr").item(j)); j++) {
	
	        // crude way to sort by surname and name after first choice
	        a[j] = new Array();
	        a[j][0] = getConcatenedTextContent(node.getElementsByTagName("td").item(i));
	        a[j][1] = getConcatenedTextContent(node.getElementsByTagName("td").item(1));
	        a[j][2] = getConcatenedTextContent(node.getElementsByTagName("td").item(0));		
	        a[j][3] = node;
	    }
	
	    if (a.length > 1) {
		
	        a.sort(compare);
	
	        // not a perfect way to check, but hell, it suits me fine
	        if (a[0][0] == getConcatenedTextContent(tbody.getElementsByTagName("tr").item(0).getElementsByTagName("td").item(i))
		       && a[1][0] == getConcatenedTextContent(tbody.getElementsByTagName("tr").item(1).getElementsByTagName("td").item(i))) 
	        {
	            a.reverse();
	            lastindex = el.getElementsByTagName('img').length - 1;
	            el.getElementsByTagName('img').item(lastindex).setAttribute('src', portal_url + '/arrowDown.gif');
	        }
	
	    }
		
	    for (var j = 0; j < a.length; j++) {
	        tbody.appendChild(a[j][3]);
	    }
	}
}
    
function initalizeTableSort(e) {
    if(document.getElementById)
        {
	    var tbls = document.getElementsByTagName('table');
	    for (var t = 0; t < tbls.length; t++)
	        {
	        // elements of class="listing" can be sorted
	        var re = new RegExp(/\blisting\b/)
	        // elements of class="nosort" should not be sorted
	        var xre = new RegExp(/\bnosort\b/)
	        if (re.exec(tbls[t].className) && !xre.exec(tbls[t].className))
	        {
	                var tablename = tbls[t].getAttribute('id');
	                var thead = document.getElementById(tablename).getElementsByTagName("thead").item(0);
	                var node;
	                // set up blank spaceholder gifs
	                blankarrow = document.createElement('img');
	                blankarrow.setAttribute('src', portal_url + '/arrowBlank.gif');
	                blankarrow.setAttribute('height',6);
	                blankarrow.setAttribute('width',9);
	                // the first sortable column should get an arrow initially.
	                initialsort = false;
	                for (var i = 0; (node = thead.getElementsByTagName("th").item(i)); i++) {
	                    // check that the columns does not have class="nosort"
	                    if (!xre.exec(node.className)) {
	                        node.insertBefore(blankarrow.cloneNode(1), node.firstChild);
	                        if (!initialsort) {
	                            initialsort = true;
	                            uparrow = document.createElement('img');
	                            uparrow.setAttribute('src', portal_url + '/arrowUp.gif');
	                            uparrow.setAttribute('height',6);
	                            uparrow.setAttribute('width',9);
	                            node.appendChild(uparrow);
	                        } else {
	                            node.appendChild(blankarrow.cloneNode(1));
	                        }
	    
	                        if (node.addEventListener) node.addEventListener("click",sort,false);
	                        else if (node.attachEvent) node.attachEvent("onclick",sort);
	                    }
	                }
	        }
	    }
	}
}   
// **** End table sort script ***
if(document.getElementById)
    {
		registerPloneFunction(initalizeTableSort)   
}

// Actions used in the folder_contents view
function submitFolderAction(folderAction) {
    if(document.getElementById)
        {
	    document.folderContentsForm.action = document.folderContentsForm.action+'/'+folderAction;
	    document.folderContentsForm.submit();
	}
}

function submitFilterAction() {
    if(document.getElementById)
        {
	    document.folderContentsForm.action = document.folderContentsForm.action+'/folder_contents';
	    filter_selection=document.getElementById('filter_selection');
	    for (var i =0; i < filter_selection.length; i++){
	        if (filter_selection.options[i].selected) {
	            if (filter_selection.options[i].value=='#') {
	                document.folderContentsForm.filter_state.value='clear_view_filter';
	            }
	            else {
	                document.folderContentsForm.filter_state.value='set_view_filter';
	            }
	        }						
	    }
	    document.folderContentsForm.submit();
	}
}    

// Functions for selecting all checkboxes in folder_contents/search_form view

function selectAll(id, formName) {
  // get the elements. if formName is p rovided, get the elements inside the form
    if(document.getElementById)
        {
		  if (formName==null) {
		     checkboxes = document.getElementsByName(id)
		     for (i = 0; i < checkboxes.length; i++)
		         checkboxes[i].checked = true ;
		  } else {
		     for (i=0; i<document.forms[formName].elements.length;i++)
			 {
			   if (document.forms[formName].elements[i].name==id) 
		            document.forms[formName].elements[i].checked=true;
			  }
		  }
	}
}

function deselectAll(id, formName) {
    if(document.getElementById)
        {
		  if (formName==null) {
		     checkboxes = document.getElementsByName(id)
		     for (i = 0; i < checkboxes.length; i++)
		         checkboxes[i].checked = false ;
		  } else {
		     for (i=0; i<document.forms[formName].elements.length;i++)
			 {
			   if (document.forms[formName].elements[i].name==id) 
		            document.forms[formName].elements[i].checked=false;
			  }
		  }
	}
}

function toggleSelect(selectbutton, id, initialState, formName) {
  // required selectbutton: you can pass any object that will function as a toggle
  // optional id: id of the the group of checkboxes that needs to be toggled (default=ids:list
  // optional initialState: initial state of the group. (default=false)
  //   e.g. folder_contents is false, search_form=true because the item boxes
  //   are checked initially.
  // optional formName: name of the form in which the boxes reside, use this if there are more
  //   forms on the page with boxes with the same name

    if(document.getElementById)
        {

		  id=id || 'ids:list'  // defaults to ids:list, this is the most common usage
		
		  if (selectbutton.isSelected==null)
		  {
		      initialState=initialState || false;
			  selectbutton.isSelected=initialState;
		  }
		  
		  // create and use a property on the button itself so you don't have to 
		  // use a global variable and we can have as much groups on a page as we like.
		  if (selectbutton.isSelected == false) {
		    selectbutton.setAttribute('src', portal_url + '/select_none_icon.gif');
		    selectbutton.isSelected=true;
		    return selectAll(id, formName);
		  }
		  else {
		    selectbutton.setAttribute('src',portal_url + '/select_all_icon.gif');
		    selectbutton.isSelected=false;
		    return deselectAll(id, formName);
		  }
	}
}

 

// script for detecting external links.
// sets their target-attribute to _blank , and adds a class external

function scanforlinks(){
    // securing against really old DOMs 
    if(document.getElementById)
        {
    
		    if (! document.getElementsByTagName){return false};
		    if (! document.getElementById){return false};
		    // Quick utility function by Geir B�kholt
		    // Scan all links in the document and set classes on them dependant on 
		    // whether they point to the current site or are external links
		    
		    contentarea = getContentArea()
		    if (! contentarea){return false}
		    
		    links = contentarea.getElementsByTagName('a');
		    for (i=0; i < links.length; i++){      
		        if ((links[i].getAttribute('href'))&&(links[i].className.indexOf('link-plain')==-1 )){
		            var linkval = links[i].getAttribute('href')
		            // check if the link href is a relative link, or an absolute link to the current host.
					if (linkval.toLowerCase().indexOf(window.location.protocol+'//'+window.location.host)==0) {
		                // we are here because the link is an absolute pointer internal to our host
		                // do nothing
		            } else if (linkval.indexOf('http:') != 0){
		                // not a http-link. Possibly an internal relative link, but also possibly a mailto ot other snacks
		                // add tests for all relevant protocols as you like.
		                
		                protocols = ['mailto', 'ftp', 'news', 'irc', 'h323', 'sip', 'callto', 'https']
		                // h323, sip and callto are internet telephony VoIP protocols
		                
		                for (p=0; p < protocols.length; p++){  
		                     if (linkval.indexOf(protocols[p]+':') == 0){
		                    // this link matches the protocol . add a classname protocol+link
		                    //links[i].className = 'link-'+protocols[p]
		                        wrapNode(links[i], 'span', 'link-'+protocols[p])
		                        break;
		                    }
		                }
		            }else{
		                // we are in here if the link points to somewhere else than our site.
		                if ( links[i].getElementsByTagName('img').length == 0 ){
							// we do not want to mess with those links that already have images in them
		                    //links[i].className = 'link-external'
		                    wrapNode(links[i], 'span', 'link-external')
		                    //links[i].setAttribute('target','_blank')
		                    }
		                
		                
		                
		                
		            }
		        }
		    }
	}
}

if(document.getElementById)
    {

		registerPloneFunction(scanforlinks)   
	}

function climb(node, word){
	 // traverse childnodes
    if(document.getElementById)
        {
		    if (! node){return false}
		    if (node.hasChildNodes) {
				var i;
				for (i=0;i<node.childNodes.length;i++) {
		            climb(node.childNodes[i],word);
				}
		        if (node.nodeType == 3){
		            checkforhighlight(node, word);
		           // check all textnodes. Feels inefficient, but works
		        }
	}
}
function checkforhighlight(node,word) {
    if(document.getElementById)
        {
        ind = node.nodeValue.toLowerCase().indexOf(word.toLowerCase())
		if (ind != -1) {
            if (node.parentNode.className != "highlightedSearchTerm"){
                par = node.parentNode;
                contents = node.nodeValue;
			
                // make 3 shiny new nodes
                hiword = document.createElement("span");
				hiword.className = "highlightedSearchTerm";
				hiword.appendChild(document.createTextNode(contents.substr(ind,word.length)));
				
                par.insertBefore(document.createTextNode(contents.substr(0,ind)),node);
				par.insertBefore(hiword,node);
				par.insertBefore(document.createTextNode(contents.substr(ind+word.length)),node);

                par.removeChild(node);
		        }
        	} 
		}
	}  
}


function correctPREformatting(){
        // small utility thing to correct formatting for PRE-elements and some others
        // thanks to Michael Zeltner for CSS-guruness and research ;) 
		// currently not activated
    if(document.getElementById)
        {
        contentarea = getContentArea();
        if (! contentarea){return false}
        
        pres = contentarea.getElementsByTagName('pre');
        for (i=0;i<pres.length;i++){
           wrapNode(pres[i],'div','visualOverflow')
			}
               
        //tables = contentarea.getElementsByTagName('table');
        // for (i=0;i<tables.length;i++){
        //   if (tables[i].className=="listing"){
        //   wrapNode(tables[i],'div','visualOverflow')
		//  }
        //}      
	}
}
//registerPloneFunction(correctPREformatting);

function highlightSearchTerm() {
        // search-term-highlighter function --  Geir B�kholt
    if(document.getElementById)
        {
        query = window.location.search
        // _robert_ ie 5 does not have decodeURI 
        if (typeof decodeURI != 'undefined'){
            query = unescape(decodeURI(query)) // thanks, Casper 
        }
        else {
            return false
        }
        if (query){
            var qfinder = new RegExp()
            qfinder.compile("searchterm=([^&]*)","gi")
            qq = qfinder.exec(query)
            if (qq && qq[1]){
                query = qq[1]
                
                // the cleaner bit is not needed anymore, now that we travese textnodes. 
                //cleaner = new RegExp
                //cleaner.compile("[\\?\\+\\\\\.\\*]",'gi')
                //query = query.replace(cleaner,'')
                
                if (!query){return false}
                queries = query.replace(/\+/g,' ').split(/\s+/)
                
                // make sure we start the right place and not higlight menuitems or breadcrumb
                contentarea = getContentArea();
				for (q=0;q<queries.length;q++) {
                                       // don't highlight reserved catalog search terms
                                       if (queries[q].toLowerCase() != 'not'
                                               && queries[q].toLowerCase() != 'and'
                                               && queries[q].toLowerCase() != 'or') {
                       climb(contentarea,queries[q]);
                                       }
                }
            }
        }
	}
}
if(document.getElementById)
    {
	registerPloneFunction(highlightSearchTerm);
}

// ----------------------------------------------
// StyleSwitcher functions written by Paul Sowden
// http://www.idontsmoke.co.uk/ss/
// - - - - - - - - - - - - - - - - - - - - - - -
// For the details, visit ALA:
// http://www.alistapart.com/stories/alternate/
// ----------------------------------------------

function setActiveStyleSheet(title, reset) {
    if(document.getElementById)
        {
		  var i, a, main;
		  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
		      a.disabled = true;
		      if(a.getAttribute("title") == title) a.disabled = false;
		    }
		  }
		  if (reset == 1) {
		  createCookie("wstyle", title, 365);
		  }
	}
}

function setStyle() {
    if(document.getElementById)
        {
			var style = readCookie("wstyle");
			if (style != null) {
			setActiveStyleSheet(style, 0);
			}
	}
}

function createCookie(name,value,days) {
    if(document.getElementById)
        {
		  if (days) {
		    var date = new Date();
		    date.setTime(date.getTime()+(days*24*60*60*1000));
		    var expires = "; expires="+date.toGMTString();
		  }
		  else expires = "";
		  document.cookie = name+"="+escape(value)+expires+"; path=/;";
	}
}

function readCookie(name) {
    if(document.getElementById)
        {
	  var nameEQ = name + "=";
	  var ca = document.cookie.split(';');
	  for(var i=0;i < ca.length;i++) {
	    var c = ca[i];
	    while (c.charAt(0)==' ') c = c.substring(1,c.length);
	    if (c.indexOf(nameEQ) == 0) return unescape(c.substring(nameEQ.length,c.length));
	  }
	  return null;
	}
}
if(document.getElementById)
    {

		registerPloneFunction(setStyle);
}




// jscalendar glue -- Leonard Norrg�rd <vinsci@*>
// This function gets called when the user clicks on some date.
function onJsCalendarDateUpdate(cal) {
    if(document.getElementById)
        {
	    var year   = cal.params.input_id_year;
	    var month  = cal.params.input_id_month;
	    var day    = cal.params.input_id_day;
	    // var hour   = cal.params.input_id_hour;
	    // var minute = cal.params.input_id_minute;
	
	    // cal.params.inputField.value = cal.date.print('%Y/%m/%d %H:%M'); // doesn't work in Opera, don't use time now
	    //cal.params.inputField.value = cal.date.print('%Y/%m/%d'); // doesn't work in Opera
	    var daystr = '' + cal.date.getDate();
	    if (daystr.length == 1)
	    	daystr = '0' + daystr;
	    var monthstr = '' + (cal.date.getMonth()+1);
	    if (monthstr.length == 1)
		monthstr = '0' + monthstr;
	    cal.params.inputField.value = '' + cal.date.getFullYear() + '/' + monthstr + '/' + daystr
	
	    year.value  = cal.params.inputField.value.substring(0,4);
	    month.value = cal.params.inputField.value.substring(5,7);
	    day.value   = cal.params.inputField.value.substring(8,10);
	    // hour.value  = cal.params.inputField.value.substring(11,13);
	    // minute.value= cal.params.inputField.value.substring(14,16);
	}
}


function showJsCalendar(input_id_anchor, input_id, input_id_year, input_id_month, input_id_day, input_id_hour, input_id_minute, yearStart, yearEnd) {
    // do what jscalendar-x.y.z/calendar-setup.js:Calendar.setup would do
    if(document.getElementById)
        {
		    var input_id_anchor = document.getElementById(input_id_anchor);
		    var input_id = document.getElementById(input_id);
		    var input_id_year = document.getElementById(input_id_year);
		    var input_id_month = document.getElementById(input_id_month);
		    var input_id_day = document.getElementById(input_id_day);
		    // var input_id_hour = document.getElementById(input_id_hour);
		    // var input_id_minute = document.getElementById(input_id_minute);
		    var format = 'y/mm/dd';
		
		    var dateEl = input_id;
		    var mustCreate = false;
		    var cal = window.calendar;
		
		    var params = {
			'range' : [yearStart, yearEnd],
			inputField : input_id,
		        input_id_year : input_id_year,
			input_id_month: input_id_month,
			input_id_day  : input_id_day
			// input_id_hour : input_id_hour,
			// input_id_minute: input_id_minute
    		};

		    function param_default(pname, def) { 
				    if (typeof params[pname] == "undefined") 
				    	{ params[pname] = def; } 
		    };
		
		    param_default("inputField",     null);
		    param_default("displayArea",    null);
		    param_default("button",         null);
		    param_default("eventName",      "click");
		    param_default("ifFormat",       "%Y/%m/%d");
		    param_default("daFormat",       "%Y/%m/%d");
		    param_default("singleClick",    true);
		    param_default("disableFunc",    null);
		    param_default("dateStatusFunc", params["disableFunc"]); // takes precedence if both are defined
		    param_default("mondayFirst",    true);
		    param_default("align",          "Bl");
		    param_default("range",          [1900, 2999]);
		    param_default("weekNumbers",    true);
		    param_default("flat",           null);
		    param_default("flatCallback",   null);
		    param_default("onSelect",       null);
		    param_default("onClose",        null);
		    param_default("onUpdate",       null);
		    param_default("date",           null);
		    param_default("showsTime",      false);
		    param_default("timeFormat",     "24");
		
		    if (!window.calendar) {
			window.calendar = cal = new Calendar(true, //params.mondayFirst,
			     null,
			     onJsCalendarDateUpdate,
			     function(cal) { cal.hide(); });
			cal.time24 = true;
			cal.weekNumbers = true;
			mustCreate = true;
		    } else {
			cal.hide();
		    }
		    cal.setRange(yearStart,yearEnd);
		    cal.params = params;
		    cal.setDateStatusHandler(null);
		    cal.setDateFormat(format);
		    if (mustCreate)
			cal.create();
		    cal.parseDate(dateEl.value || dateEl.innerHTML);
		    cal.refresh();
		    cal.showAtElement(input_id_anchor, null);
		    return false;
	}
}


// This function updates a hidden date field with the current values of the widgets
function update_date_field(field, year, month, day, hour, minute, ampm)
{
    if(document.getElementById)
        {
		
		    var field  = document.getElementById(field)
		    var date   = document.getElementById(date)
		    var year   = document.getElementById(year)
		    var month  = document.getElementById(month)
		    var day    = document.getElementById(day)
		    var hour   = document.getElementById(hour)
		    var minute = document.getElementById(minute)
		    var ampm   = document.getElementById(ampm)
		
		    if (0 < year.value)
		    {
		        // Return ISO date string
		        // Note: This relies heavily on what date_components_support.py puts into the form.
		        field.value = year.value + "-" + month.value + "-" + day.value + " " + hour.value + ":" + minute.value
		        // Handle optional AM/PM
		        if (ampm && ampm.value)
		            field.value = field.value + " " + ampm.value
		    } 
		    else 
		    {
		        // Return empty string
		        field.value = ''
		        // Reset widgets
		        month.options[0].selected = 1
		        day.options[0].selected = 1
		        hour.options[0].selected = 1
		        minute.options[0].selected = 1
		        if (ampm && ampm.options)
		            ampm.options[0].selected = 1
		    }
	}
}



function fullscreenMode() {
    if(document.getElementById)
        {
		    if (document.getElementById('portal-top').style.display == 'none') {
		        document.getElementById('portal-top').style.display = 'block';
		        document.getElementById('portal-column-one').style.display = 'block';
		        document.getElementById('portal-column-two').style.display = 'block';
		        }
		    else {
		        document.getElementById('portal-top').style.display = 'none';
		        document.getElementById('portal-column-one').style.display = 'none';
		        document.getElementById('portal-column-two').style.display = 'none';
		    }
	}
}


// and finally : Mike Malloch's fixes for Internet Explorer 5 - 
// These should be considered temporary, as they actually add functionality to IE5, while we just want it to not blurt errormessages... 
//

function hackPush(el){
    if(document.getElementById)
        {
	        this[this.length] = el;
	}
}

function hackPop(){
    if(document.getElementById)
        {
	        var N = this.length - 1, el = this[N];
	        this.length = N
	        return el;
	}
}

function hackShift(){
    if(document.getElementById)
        {
        var one = this[0], N = this.length;
        for (var i = 1; i < N; i++){
                this[i-1] = this[i];
        }
        this.length = N-1
        return one;
	}
}

if(document.getElementById)
    {

	var testPushPop = new Array();
	if (testPushPop.push){
	}else{
	        Array.prototype.push = hackPush
	        Array.prototype.pop = hackPop
	        Array.prototype.shift =hackShift;
	}
}