var sortSettings = new Array();
	var maxSortCriteria = 3;
	var productOrder = new Array();
	var currentView = 'shortthin';
	var manual_addedProducts = new Array();
	var manual_hiddenProducts = new Array();
	var hiddenCriteria = new Array();
	var oldHref = "";
	var rowFilters = new Array();
	var screenUpdatesOn = true;

	 function turnOffScreenUpdates()
	 {
	  screenUpdatesOn = false;
	 }
	 function turnOnScreenUpdates()
	 {
	  screenUpdatesOn = true;
	  updateScreen();
	 }

	function handleFilterChange()
	{
		processSort();
	}
	function setFilter(name,filtertext,field)
	{
		var filter = new Array();
		filter["name"] = name;
		filter["filtertext"] = filtertext;
		filter["field"] = field;
		rowFilters[name] = filter;
		handleFilterChange();	
	}
	function listSizeChooserOnChange()
	{
		views[currentView]['threshold'] = document.compareenginecontrolsform.listSizeChooserControl.options[document.compareenginecontrolsform.listSizeChooserControl.selectedIndex].text;		
		if(views[currentView]['threshold'] == 'all')
		{
			views[currentView]['threshold'] = ""+productOrder.length;
		}
		updateScreen();
		window.focus();		
	}
	function hideCriteria(criteria)
	{
		if(hiddenCriteria.indexOf(criteria)==-1)
		{
			hiddenCriteria.push(criteria);
		}
		updateScreen();
		window.focus();
	}
	function showHiddenCriteria()
	{
		while(hiddenCriteria.length>0)
		{
			hiddenCriteria.shift();
		}
		updateScreen();
		window.focus();
	}
	function removeAllProductsLackingCriteria(criteria)
	{
	
	}
	
	function addProductToComparison(productID)
	{
		if(manual_addedProducts.indexOf(productID)==-1)
		{
			manual_addedProducts.push(productID);
		}
		updateScreen();
		window.focus();
	}
	function openCompareWindow(csvlist)
	{
		var width = Math.min(800,screen.width);
		var height = Math.min(480,screen.height);
		var thisWin = window.open("/products/compareWindow.php#[["+csvlist+"]]","compareEngineComparisonWindow"); 
		thisWin.focus();
	}
	function removeFromCompareWindow(csvlist)
	{
		var ids = csvlist.split(",");
		for(var i=0;i<ids.length;i++)
		{
			if(manual_addedProducts.indexOf(ids[i])!=-1)
			{
				manual_addedProducts[manual_addedProducts.indexOf(ids[i])] = "";
			}			
		}		
		updateScreen();	
	}
	function watchLocation()
	{
		if(oldHref != window.location.href)
		{
			oldHref = window.location.href;
			var productIDsToAdd = getAddedProductIDsFromURL();
			for(var i=0;i<productIDsToAdd.length;i++)
			{
				addProductToComparison(productIDsToAdd[i]);
			}
		}				
	}
	function addSortParameter(criteria)
	{
		var newParam = new Array();
		newParam['criteria'] = criteria;
		if((sortSettings.length > 0)&&(newParam['criteria'] == sortSettings[0]['criteria']))
		{
			if(sortSettings[0]['direction'] == 'up')
			{
				sortSettings[0]['direction'] = 'down';
			}
			else
			{
				sortSettings[0]['direction'] = 'up';
			}
		}
		else
		{
			newParam['direction'] = criteriameta[criteria]['sort_default_direction'];
			while(sortSettings.length >= maxSortCriteria)
			{
				sortSettings.pop();
			}
			sortSettings.unshift(newParam);	
		}
		processSort();
		var sortInfoText = "sort by ";
		for(var i=0;i<sortSettings.length;i++)
		{
			sortInfoText += sortSettings[i]['criteria']+'('+sortSettings[i]['direction']+') ';
		}
		for (var i=0; i< Math.min(productOrder.length,views[currentView]['threshold']); i++)
		{
			var product = productOrder[i]['id']['value'];
			sortInfoText += " "+product+",";
		}			

//		$('sortInfo').innerHTML = sortInfoText;
	}
	function getQueryVariable(variable) 
	{
		var query = window.location.search.substring(1);
		var vars = query.split("&");
		for (var i=0;i<vars.length;i++) 
		{
			var pair = vars[i].split("=");
			if (pair[0] == variable) 
			{
				return pair[1];
			}
		} 
	}
	function getAddedProductIDsFromURL()
	{
		var query = "";
		
		var start = -1;
		var end = -1;
		
		if(window.location.href.indexOf('[[')>-1)
		{
			start = window.location.href.indexOf('[[');
			end = window.location.href.indexOf(']]');		
			if((start > -1)&&(end > -1))
			{
				start += 2;
			}
			else
			{
				var ids = new Array();
				return ids;
			}
		}
		else if(window.location.href.indexOf('%5B')>-1)
		{
			start = window.location.href.indexOf('%5B%5B');
			end = window.location.href.indexOf('%5D%5D');		
			if((start > -1)&&(end > -1))
			{
				start += 6;
			}
			else
			{
				var ids = new Array();
				return ids;
			}
		}
		query = window.location.href.substring(start,end);
		var ids = query.split(",");
		return ids;
	}
	function isDigit(num) 
	{
		if (num.length>1){return false;}
		var string="1234567890";
		if (string.indexOf(num)!=-1){return true;}
		return false;
	}
	function trim(stringToTrim) 
	{
		return stringToTrim.replace(/^\s+|\s+$/g,"");
	}
	function sortCompareForCriteria(a,b,criteria,direction)
	{
		var retVal = 0;
		var aval = a[criteria]['value'];
		if((a[criteria]['sortvalue']!=null)&&(a[criteria]['sortvalue']!=''))
		{
			aval = a[criteria]['sortvalue'];
		}
		
		var bval = b[criteria]['value'];
		if((b[criteria]['sortvalue']!=null)&&(b[criteria]['sortvalue']!=''))
		{
			bval = b[criteria]['sortvalue'];
		}

		if(criteriameta[criteria]['sort_function']=='num')
		{
			if((aval == null)||(aval == ''))
			{
				aval = '0';
			}
			if((bval == null)||(bval == ''))
			{
				bval = '0';
			}
			aval = parseFloat(trim(aval));
			bval = parseFloat(trim(bval));
		}
		if(criteriameta[criteria]['sort_function']=='enum')
		{
			aval = parseFloat(trim(a[criteria]['sortorder']));
			bval = parseFloat(trim(b[criteria]['sortorder']));
		}
		if(criteriameta[criteria]['sort_function']=='date')
		{
			aval = trim(a[criteria]['date']);
			bval = trim(b[criteria]['date']);
		}
		if(criteriameta[criteria]['sort_function']=='price')
		{
			aval = parseFloat(trim(a[criteria]['price']));
			bval = parseFloat(trim(b[criteria]['price']));
		}
		if(criteriameta[criteria]['sort_function']=='screenres')
		{
			if(
				(a[criteria]['hor'] == null)||(a[criteria]['hor'] == '')||
				(a[criteria]['ver'] == null)||(a[criteria]['ver'] == '')
			  )
			{
				aval = 0;
			}
			else
			{
				aval = parseFloat(trim(a[criteria]['hor']))*parseFloat(trim(a[criteria]['ver']));
			}
			if(
				(b[criteria]['hor'] == null)||(b[criteria]['hor'] == '')||
				(b[criteria]['ver'] == null)||(b[criteria]['ver'] == '')
			  )
			{
				bval = 0;
			}
			else
			{
				bval = parseFloat(trim(b[criteria]['hor']))*parseFloat(trim(b[criteria]['ver']));
			}
		}
		if(criteriameta[criteria]['sort_function']=='isempty')
		{
			if((aval == null)||(trim(aval) == ''))
			{
				aval = 0;
			}
			else
			{
				aval = 1;
			}
			if((bval == null)||(trim(bval) == ''))
			{
				bval = 0;
			}
			else
			{
				bval = 1;
			}
		}
		if(aval>bval)
		{
			retVal = 1;
		}
		else if(aval==bval)
		{
			retVal = 0;
		}
		else
		{
			retVal = -1;
		}
		if(direction == 'down')
		{
			retVal = -(retVal);
		}
		return retVal;				
	}
	function updateScreen()
	{
		if(screenUpdatesOn == true)
		{
		$('compareengine').innerHTML = getCompareEngineHTML();
		for(var rowinsert in views[currentView]['rowinserts'])
		{
			if(($('adsource'+rowinsert) != null)&&($('compareengineadcontents'+rowinsert)!=null))
			{
				$('compareengineadcontents'+rowinsert).innerHTML = $('adsource'+rowinsert).innerHTML;
			}
		}
/*
		var width = $('compareengine').offsetWidth;
		if(width!=null)
		{
			if(screen.width>width)
			{
				top.outerWidth = width+30;
			}
			else
			{
				top.outerWidth = screen.width;
			}
		}
*/		
		}
	}

	function sortComparison(a,b)
	{
		var result = 0;
		for(var i=0;i<sortSettings.length;i++)
		{
			result = sortCompareForCriteria(a,b,sortSettings[i]['criteria'],sortSettings[i]['direction']);
			if(result != 0)
			{
				return result;
			}
		}		
		return result;
	}
	
	function processSort()
	{
		productOrder = new Array();
		for (var product in products)
		{
			productOrder.push(products[product]);
		}
		if(sortSettings.length>0)
		{
			productOrder.sort(sortComparison);				
		}
		updateScreen();
	}
	
	function cleanValue(value)
	{
		value = unescape(value);
		value = trim(value);
		if((value == null)||(value == ""))
		{
			return "";
		}
		value = value.replace(/\+/g,' ');
		return value;
	}
	
	function getHighlightClass(product,criteria)
	{
		var value = cleanValue(products[product][criteria]['value']);
		var highlightFunction = criteriameta[criteria]['highlight_function'];
		if(highlightFunction == 'yesno')
		{
			if(value == 'yes')
			{
				return 'hlgood';
			}
			else
			{
				return 'hlbad';
			}
		}
		return "";
	}
	
	function applyTemplate(product,criteria)
	{
		var value = cleanValue(products[product][criteria]['value']);
		if((value == null)||(value == ""))
		{
			return "&nbsp;";
		}

		var template = criteriameta[criteria]['template'];
		if((template!=null)&&(template != ""))
		{
			value = template.replace(/\[\[\[value\]\]\]/g,value);
		}
		if((criteria == 'name')||(criteria == 'minipiclink'))
		{
			var dirname = cleanValue(products[product]['dirname']['value']);
			value = '<a href="/products/'+dirname+'" >'+value+'</abc>';
		}
		return value;
	}
	function processCheckedItems()
	{
		var checkedProducts = '';
		var firstProd = true;
		for(var i=0; i<document.compareenginecontrolsform.productid.length;i++)
		{
			if (document.compareenginecontrolsform.productid[i].checked)
			{
				if(firstProd)
				{
					firstProd = false;
					checkedProducts += ',';
				}
				else
				{
					checkedProducts += ',';
				}
				checkedProducts += document.compareenginecontrolsform.productid[i].value;
			}
		}
		if(views[currentView]['manual']=='1')
		{
			removeFromCompareWindow(checkedProducts);
		}
		else
		{
			openCompareWindow(checkedProducts);
		}
	}
	function getCompareEngineToolkit()
	{

		var compareEngineToolkit = '<div class="compareenginetoolbar">';
		if(views[currentView]['manual']=='1')
		{
			compareEngineToolkit += '<a href="#" onClick="processCheckedItems();return false;">Remove checked products.</a>';
		}
		else
		{
			compareEngineToolkit += '<a href="#" onClick="processCheckedItems();return false;">Compare checked products.</a>';
		}
		if(views[currentView]['manual']=='1')
		{
			if(hiddenCriteria.length>0)
			{
				compareEngineToolkit += '<a href="#" onClick="showHiddenCriteria();return false;">Show '+hiddenCriteria.length+' Hidden Criteria</a>';				
			}
		}
		else
		{
		/*
			compareEngineToolkit += '&nbsp;&nbsp;<a href="#" onClick="openCompareWindow(\'';
			var firstProd = true;
			for (var product in products)
			{
				if(firstProd)
				{
					firstProd = false;
					compareEngineToolkit += ',';
				}
				else
				{
					compareEngineToolkit += ',';
				}
				compareEngineToolkit += product;
			}
			compareEngineToolkit += '\');return false;">Add all products to the comparison window.</a>&nbsp;&nbsp;'; */
			compareEngineToolkit += 'Show <select name="listSizeChooserControl" onChange="listSizeChooserOnChange()">';
			compareEngineToolkit += '<option value="20" '+(parseFloat(views[currentView]['threshold'])==20?'selected':'')+'>20</option>';
			compareEngineToolkit += '<option value="30" '+(parseFloat(views[currentView]['threshold'])==30?'selected':'')+'>30</option>';
			compareEngineToolkit += '<option value="40" '+(parseFloat(views[currentView]['threshold'])==40?'selected':'')+'>40</option>';
			compareEngineToolkit += '<option value="all" '+(parseFloat(views[currentView]['threshold'])>30?'selected':'')+'>all</option>';
			compareEngineToolkit += '</select> products.';

			
		}
		compareEngineToolkit += '</div>';
		return compareEngineToolkit;
	}
	
	function getCompareEngineHTML()
	{
		var rowSortOrder = new Array();
		var tableBodyHTML = '';
		var tableHeaderGroupRowHTML = '<tr class="groupheader_row">';
		var tableHeaderCriteriaRowHTML = '<tr class="criheader_row">';
		var numberOfCells = 0;
		var numberOfVisibleGroups = 0;
		var formHeader = '<form name="compareenginecontrolsform">';
		var formFooter = '</form>';
		for(var group in views[currentView]['criteria']['order'])
		{
			
			var itemsInGroupCount = 0;
			for(var i=0; i<views[currentView]['criteria']['order'][group].length; i++)
			{
				var criteria = views[currentView]['criteria']['order'][group][i];
				if(hiddenCriteria.indexOf(criteria)>-1)
				{
					continue;
				}
				itemsInGroupCount++;
				numberOfCells++;
				tableHeaderCriteriaRowHTML  += '<td class="criheader_'+criteria+'">';
				
				if(criteriameta[criteria]['sort_function'] != "")
				{
					tableHeaderCriteriaRowHTML  += '<a href="#" onClick="addSortParameter(\''+criteria+'\');return false;" class="sortlink">'+criteriameta[criteria]['title']+'</a>';				
				}
				else
				{
					tableHeaderCriteriaRowHTML  += ''+criteriameta[criteria]['title'];				
				}
				if(views[currentView]['manual']=='1')
				{
					tableHeaderCriteriaRowHTML  += '<br />';
					if(criteriameta[criteria]['can_hide'] == 1)
					{
						tableHeaderCriteriaRowHTML  += '<br /><a href="#" onClick="hideCriteria(\''+criteria+'\');return false;" class="sortlink"><img src="action_stop.gif" border="0" /></a>';				
						if(criteriameta[criteria]['sort_function'] == "yesno")
						{
//						tableHeaderCriteriaRowHTML  += '&nbsp;&nbsp;&nbsp;<a href="#" onClick="removeAllProductsLackingCriteria(\''+criteria+'\');return false;" class="sortlink">xx</a>';
						}
					}
					else
					{
						tableHeaderCriteriaRowHTML  += '<br />';
					}
				}
				tableHeaderCriteriaRowHTML  += '</td>';
			}
			if(itemsInGroupCount>0)
			{
				tableHeaderGroupRowHTML += '<td class="groupalternate_'+(numberOfVisibleGroups % 2)+'" colspan="'+itemsInGroupCount+'">'+views[currentView]['criteria']['groupmeta'][group]['title']+'</td>';
				numberOfVisibleGroups++;
			}
		}
		tableHeaderGroupRowHTML += "</tr>";
		tableHeaderCriteriaRowHTML += "</tr>";
		var filterResults = 0;
		for(var filterName in rowFilters)
		{
			var filterObj = rowFilters[filterName];
			if((filterObj['filtertext'] != null)
				&&
				(trim(filterObj['filtertext']) != ""))
			{
				filterResults = 1;
			}
		
		}
		var createRowCounter = 0;
		var numberOfVisibleProducts = Math.min(productOrder.length,views[currentView]['threshold']);
		for (var i=0; ((i< productOrder.length)&&(createRowCounter< numberOfVisibleProducts)); i++)
		{
			numberOfVisibleGroups = 0;
			var product = productOrder[i]['id']['value'];
			if((manual_addedProducts.indexOf(product)==-1)&&(views[currentView]['manual']=='1'))
			{
				continue;
			}
			if(filterResults > 0)
			{
				var ok = true;

				for(var filterName in rowFilters)
				{
					var filterOK = true;
					var filterObj = rowFilters[filterName];
					if(filterObj['filtertext'] == null)
					{
						continue;
					}
					var filter = "";
					if((filterObj['filtertext'] != null)
						&&
						(trim(filterObj['filtertext']) != ''))
					{
						filter = trim(filterObj['filtertext']).toLowerCase();
								
						filterOK = false;		
								
						for(var group in views[currentView]['criteria']['order'])
						{
							for(var j=0; j<views[currentView]['criteria']['order'][group].length; j++)
							{					
								var criteria = views[currentView]['criteria']['order'][group][j];
		
								if((hiddenCriteria.indexOf(criteria)>-1)
									&&
									(filterObj['field'] == -1))
								{
									continue;
								}
								var filterCheckValue = applyTemplate(product,criteria);
		
								if(filterCheckValue != null)
								{
									filterCheckValue = filterCheckValue.toLowerCase();
									if((( (filterObj['field'] == -1) || (criteria == filterObj['field']) )
										&&
										(filterCheckValue.indexOf(filter)!=-1)))
									{
										filterOK = true;
									}
								}		
							}
						}								
					}
					if(!filterOK)
					{
						ok = false;
					}
				}

				
				if(!ok)
				{
					continue;
				}
			}
			if((createRowCounter>0)&&((createRowCounter % views[currentView]['repeatheaderafter'])==0))
			{			
				tableBodyHTML += tableHeaderCriteriaRowHTML;
			}
			var rowInsert = views[currentView]['rowinserts'][''+createRowCounter];
			if((rowInsert != null)&&(rowInsert != ''))
			{
				tableBodyHTML += '<tr class="compareenginead"><td id="compareengineadcontents'+createRowCounter+'" class="compareengineadcontents" colspan="'+numberOfCells+'" align="center">'+unescape(rowInsert)+'</td></tr>\n';
			}
			tableBodyHTML += '<tr class="prodrow_'+product+'">';
			for(var group in views[currentView]['criteria']['order'])
			{
				var itemsInGroupCount = 0;
				for(var j=0; j<views[currentView]['criteria']['order'][group].length; j++)
				{					
					var criteria = views[currentView]['criteria']['order'][group][j];
					if(hiddenCriteria.indexOf(criteria)>-1)
					{
						continue;
					}
					itemsInGroupCount++;
					var highlightclass = getHighlightClass(product,criteria);
					tableBodyHTML += '<td class="cricell_'+criteria+' rowalternate_'+(createRowCounter % 2)+' groupalternate_'+(numberOfVisibleGroups % 2)+' '+highlightclass+'">'+applyTemplate(product,criteria)+'</td>\n';
				}
				if(itemsInGroupCount>0)
				{
					numberOfVisibleGroups++;
				}
				
			}
			tableBodyHTML += '</tr>';
			createRowCounter++;
		}			
		if(views[currentView]['showgroups'] == 0)
		{
			tableHeaderGroupRowHTML = '';
		}
		tableBodyHTML = '<br style="font-size: .4em;">'+formHeader+'\n<div id="compareenginetoolkitcontainer">'+getCompareEngineToolkit()+'</div>\n<table class="compareengine">'+tableHeaderGroupRowHTML+tableHeaderCriteriaRowHTML+tableBodyHTML+'</table>\n'+formFooter;
		return tableBodyHTML;
	}