var Comparison = {
	filledSlots:0,
	slots: new Array(5),
	productHtml:[],
	init:function(){
		Comparison.slots[0] = "";
		Comparison.slots[1] = "";
		Comparison.slots[2] = "";
		Comparison.slots[3] = "";
		Comparison.slots[4] = "";
		document.getElementById("removeAll").onclick = function() { return Comparison.removeAll(); }
		document.getElementById("removeAll").style.color = "#BBBBBB";
		/*
		<br />
<b>Warning</b>:  Invalid argument supplied for foreach() in <b>/dsk/mainweb/root/11073/products/video/selector/js/compare.js/index.php</b> on line <b>18</b><br />
		*/
	},
	
	addToCompare:function(obj, imgObj, imgPath, prodName, prodLink, prodId, setCookie){
		//alert(prodId);
		if(this.filledSlots < 5){
			//adds the object to the 5 slot comparison on top of page
			productDiv = "product_"+prodId;
			if(document.getElementById("plus_"+prodId))
				document.getElementById("plus_"+prodId).style.display="none";
			
			htmlToKeep = document.getElementById(productDiv).innerHTML;
			prodDetailsArray = [obj, imgObj, imgPath, prodName, prodLink];
			Comparison.productHtml[prodId] = prodDetailsArray;
			if(document.getElementById("listTypeImg").checked)
				document.getElementById(productDiv).innerHTML = '<div class="grayedOutDiv"></div>'+htmlToKeep;
			else
				document.getElementById(productDiv).innerHTML = '<span class="grayedOutSpan"></span>'+htmlToKeep;
			if(prodName.substring(0,4) != "AXIS")
				axisprefix = "AXIS ";
			else
				axisprefix = "";
			
			if(document.getElementById(imgObj))
				imgSrc = "<img src=\""+document.getElementById(imgObj).src+"\" style=\"height: 75px\" alt=\"" + axisprefix + prodName + "\" title=\"" + axisprefix + prodName + "\" />";
			else
				imgSrc = "<img src=\""+imgPath+"\" style=\"height: 75px\" alt=\"" + axisprefix + prodName + "\" title=\"" + axisprefix + prodName + "\" />";
			
			if(Comparison.slots[0] == ""){
				Comparison.slots[0] = prodId;
				document.getElementById("cph1").innerHTML = "<div>"+imgSrc+"</div><a href=\"#\" onclick=\"Comparison.removeFromCompare(this); return false;\" id=\"remove_"+prodId+"_cph1\">- Remove</a><br /><br />";
			}
			else if(Comparison.slots[1] == ""){
				Comparison.slots[1] = prodId;
				document.getElementById("cph2").innerHTML = "<div>"+imgSrc+"</div><a href=\"#\" onclick=\"Comparison.removeFromCompare(this); return false;\" id=\"remove_"+prodId+"_cph2\">- Remove</a><br /><br />";
			}
			else if(Comparison.slots[2] == ""){
				Comparison.slots[2] = prodId;
				document.getElementById("cph3").innerHTML = "<div>"+imgSrc+"</div><a href=\"#\" onclick=\"Comparison.removeFromCompare(this); return false;\" id=\"remove_"+prodId+"_cph3\">- Remove</a><br /><br />";
			}
			else if(Comparison.slots[3] == ""){
				Comparison.slots[3] = prodId;
				document.getElementById("cph4").innerHTML = "<div>"+imgSrc+"</div><a href=\"#\" onclick=\"Comparison.removeFromCompare(this); return false;\" id=\"remove_"+prodId+"_cph4\">- Remove</a><br /><br />";
			}
			else if(Comparison.slots[4] == ""){
				Comparison.slots[4] = prodId;
				document.getElementById("cph5").innerHTML = "<div>"+imgSrc+"</div><a href=\"#\" onclick=\"Comparison.removeFromCompare(this); return false;\" id=\"remove_"+prodId+"_cph5\">- Remove</a><br /><br />";
			}
			qstring = Comparison.buildQueryString();
			document.getElementById("comparisonForm").action = "processQuery.php"+qstring;
			
			//document.getElementById("cph"+(this.filledSlots+1)).innerHTML = "<div>testing</div><a href=\"#\" onclick=\"Comparison.removeFromCompare(this); return false;\" id=\"remove_"+temp[1]+"_cph"+(this.filledSlots+1)+"\">- Remove</a><br /><br />";
			if(setCookie){
				var stringToCookie = "";
				for(i = 0; i < Comparison.slots.length; i++){
					if(Comparison.slots[i] != ""){
						if(stringToCookie != "")
							stringToCookie += ",";
						stringToCookie += Comparison.slots[i];
					}
				}
				_set_session_cookie('prodSelectorCookie', stringToCookie);
				//alert(_get_cookie('prodSelectorCookie'));
			}
			this.filledSlots++;
		}else{
			alert("You can only compare 5 products at a time.");
		}
		document.getElementById("removeAll").style.color = "#3366CC";
		return;
	},
	
	removeFromCompare:function(obj){
		//alert(obj.id);
		temp = obj.id.split("remove_");
		temp2 = temp[1].split("_");
		productDiv = "product_"+temp2[0]; // temp2[0] contains the unique product id
		//cph = temp2[1];
		cph = obj.parentNode.id;
//		alert(productDiv);
		if(document.getElementById(productDiv)){
			allHtml = document.getElementById(productDiv).innerHTML;
			//document.getElementById(productDiv).innerHTML = Comparison.productHtml[temp2[0]];
			if(document.getElementById("listTypeImg").checked){ // just remove the grayed out div
				node = document.getElementById(productDiv);
				//alert(document.getElementById(productDiv).firstChild.className);
				//alert(document.getElementById(productDiv).className);
				for(i=0; i < node.childNodes.length; i++){ //needed to work in firefox
					if(node.childNodes[i].className == "grayedOutDiv"){
						node.removeChild(node.childNodes[i]);
						break;
					}
				}
				//node.removeChild(document.getElementById(productDiv).firstChild);
				//alert("test");
				if(document.getElementById("plus_"+temp2[0]))
				document.getElementById("plus_"+temp2[0]).style.display="";
			}else{ // print the full inner html
				prodDetailsArray = Comparison.productHtml[temp2[0]];
				document.getElementById(productDiv).innerHTML = "<span style=\"width: 200px; float: left\"><a id=\"compare_"+temp2[0]+"\" title=\"Click to add AXIS "+ prodDetailsArray[3]+" to your comparison\" onclick=\"Comparison.addToCompare(this, 'img_"+temp2[0]+"', '"+ prodDetailsArray[2]+"', '"+ prodDetailsArray[3]+"', '"+ prodDetailsArray[4]+"', '"+temp2[0]+"'); return false;\" href=\"#\">AXIS "+ prodDetailsArray[3]+"</a></span> <a title=\"Click to visit the product page for AXIS "+ prodDetailsArray[3]+"\" style=\"font-size: 10px;\" href=\""+ prodDetailsArray[4]+"\">Product page &raquo;</a>";
			}
		}
		document.getElementById(cph).innerHTML = "<div></div><br /><br />";
		if(cph == "cph1")
			Comparison.slots[0] = "";
		else if(cph == "cph2")
			Comparison.slots[1] = "";
		else if(cph == "cph3")
			Comparison.slots[2] = "";
		else if(cph == "cph4")
			Comparison.slots[3] = "";
		else if(cph == "cph5")
			Comparison.slots[4] = "";
		
		//left-shift the products in the comparison slots
		for(i = 0; i < 4; i++){
			if(Comparison.slots[i] == ""){
				if(Comparison.slots[i+1] != ""){
					document.getElementById("cph"+(i+1)).innerHTML = document.getElementById("cph"+(i+2)).innerHTML;
					document.getElementById("cph"+(i+2)).innerHTML = "<div></div><br /><br />";
					Comparison.slots[i] = Comparison.slots[i+1];
					Comparison.slots[i+1] = "";
				}
			}
		}
		qstring = Comparison.buildQueryString();
		document.getElementById("comparisonForm").action = "processQuery.php"+qstring;

		var stringToCookie = "";
		for(i = 0; i < Comparison.slots.length; i++){
			if(Comparison.slots[i] != ""){
				if(stringToCookie != "")
					stringToCookie += ",";
				stringToCookie += Comparison.slots[i];
			}
		}
		_set_session_cookie('prodSelectorCookie', stringToCookie);
		
		this.filledSlots--;
		if(this.filledSlots <= 0){
			document.getElementById("removeAll").style.color = "#BBBBBB";
		}
	},
	
	resetCompare:function(){
		Comparison.slots[0] = "";
		Comparison.slots[1] = "";
		Comparison.slots[2] = "";
		Comparison.slots[3] = "";
		Comparison.slots[4] = "";
		Comparison.filledSlots = 0;
		document.getElementById("removeAll").style.color = "#BBBBBB";
		document.getElementById("cph1").innerHTML = "<div></div><br /><br />";
		document.getElementById("cph2").innerHTML = "<div></div><br /><br />";
		document.getElementById("cph3").innerHTML = "<div></div><br /><br />";
		document.getElementById("cph4").innerHTML = "<div></div><br /><br />";
		document.getElementById("cph5").innerHTML = "<div></div><br /><br />";
	},
	
	removeAll:function(){
		if(Comparison.slots[0] != ""){ //run only if there's at least 1 item added to comparison
			Comparison.resetCompare();
			sendAjaxRequest("placeholder", "placeholder");
			var stringToCookie = "";
			for(i = 0; i < Comparison.slots.length; i++){
				if(Comparison.slots[i] != ""){
					if(stringToCookie != "")
						stringToCookie += ",";
					stringToCookie += Comparison.slots[i];
				}
			}
			_set_session_cookie('prodSelectorCookie', stringToCookie);
		}
		return false;
	},
	
	buildQueryString:function(){
		qstring = "?";
		pType = document.getElementById("prodType").value;
		qstring += "product_type=" + pType;
		for(i=0; i<Comparison.slots.length; i++){
			if(Comparison.slots[i] != ""){
				if(qstring == "?")
					qstring += "cmp[]="+Comparison.slots[i];
				else
					qstring += "&cmp[]="+Comparison.slots[i];
			}
		}
		//qstring += "&test=TEST";
		return qstring;
	},
	
	addPlus:function(obj){
		//using css instead to achive the same functionality
		//temp = obj.id.split("img_");	
		//document.getElementById("plus_"+temp[1]).style.display = "block";
	},

	removePlus:function(obj){
		//using css instead to achive the same functionality
		//temp = obj.id.split("img_");	
		//document.getElementById("plus_"+temp[1]).style.display = "none";

	},
	
	validateForm:function(){
		if(Comparison.filledSlots < 2){
			alert("You need to add at least two products to make a comparison.");
			return false;
		}
		else
			return;
	}
}