/*********************************************************************
(c) Copyright Comet Plc 1999-2009+. All rights reserved.
	Last updated: 2009/12/01 - Stewart Orr
/********************************************************************/

/*	sliding script aken from:
	http://www.harrymaugans.com/2007/03/06/how-to-create-an-animated-sliding-collapsible-div-with-javascript-and-css/ */

// Choose how many of the option boxes NOT to collapse
var keepThisManyOpen = 2;



var timerlen = 10;
var slideAniLen = 250;

var timerID = new Array();
var startTime = new Array();
var obj = new Array();
var endHeight = new Array();
var moving = new Array();
var dir = new Array();

function slidedown(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display != "none")
                return; // cannot slide down something that is already visible
        moving[objname] = true;
        dir[objname] = "down";
        startslide(objname);
}

function slideup(objname){
        if(moving[objname])
                return;

        if(document.getElementById(objname).style.display == "none")
                return; // cannot slide up something that is already hidden
	
		// IE workaroubnd
		if (document.all) {
			document.getElementById(objname).style.visibility = "hidden";
		}
        moving[objname] = true;
        dir[objname] = "up";
        startslide(objname);
}

function startslide(objname){
        obj[objname] = document.getElementById(objname);

        endHeight[objname] = parseInt(obj[objname].style.height);
        startTime[objname] = (new Date()).getTime();

        if(dir[objname] == "down"){
                obj[objname].style.height = "1px";
        }

        obj[objname].style.display = "block";

        timerID[objname] = setInterval('slidetick(\'' + objname + '\');',timerlen);
}

function slidetick(objname){
        var elapsed = (new Date()).getTime() - startTime[objname];

        if (elapsed > slideAniLen)
                endSlide(objname)
        else {
                var d = Math.round(elapsed / slideAniLen * endHeight[objname]);
                if(dir[objname] == "up")
                        d = endHeight[objname] - d;

                obj[objname].style.height = d + "px";
        }

        return;
}

function endSlide(objname){
        clearInterval(timerID[objname]);

        if(dir[objname] == "up") {
			obj[objname].style.display = "none";

		} else if (document.all) {
			document.getElementById(objname).style.visibility = "visible";			
		}

        obj[objname].style.height = endHeight[objname] + "px";

        delete(moving[objname]);
        delete(timerID[objname]);
        delete(startTime[objname]);
        delete(endHeight[objname]);
        delete(obj[objname]);
        delete(dir[objname]);

        return;
}


function collapseAll() {
	var refinements = gID("refinements");
	if (refinements) {
		var h4s = refinements.getElementsByTagName("h4");
		for (var i = 0; i < h4s.length; i++) {
			h4s[i].style.backgroundPosition = "right -100px";
			h4s[i].title = "Click to expand '" + h4s[i].innerHTML + "'";
			slideup(h4s[i].id+"_ul");
		}
	}
}

function expandAll() {
	var refinements = gID("refinements");
	if (refinements) {
		var h4s = refinements.getElementsByTagName("h4");
		for (var i = 0; i < h4s.length; i++) {
			h4s[i].style.backgroundPosition = "right 0";
			h4s[i].title = "Click to collapse '" + h4s[i].innerHTML + "'";
			slidedown(h4s[i].id+"_ul");
		}
	}
}

function makeRefinementHeadersToggle() {
	var refinements = gID("refinements");
	if (refinements) {
		var h3el = refinements.getElementsByTagName("h3");
		h3el[0].innerHTML += '<a class="collapse" id="refinements_collapse" href="javascript:collapseAll()" title="Collapse all refinement options">-</a> <a class="expand" id="refinements_expand" href="javascript:expandAll()" title="Expand all refinement options">+</a>';
				
		var h4s = refinements.getElementsByTagName("h4");
		for (var i = 0; i < h4s.length; i++) {
			
				h4s[i].style.cursor = "pointer";
				//h4s[i].style.background= "red";
				h4s[i].style.backgroundPosition = "right top";
				
				h4li = h4s[i].nextSibling;
				while(h4li.innerHTML == null) {
					h4li = h4li.nextSibling;
				}
				
				
				h4li.style.display = "block";
				h4li.style.overflow = "hidden";
				h4li.style.height = (h4li.clientHeight-17) + "px";
				h4s[i].title = "Click to collapse '" + h4s[i].innerHTML + "'";
					
				if (i >= keepThisManyOpen) {
					slideup(h4li.id);
					h4s[i].style.backgroundPosition = "right -100px";
					h4s[i].title = "Click to expand '" + h4s[i].innerHTML + "'";
				}
				
				try {
				h4s[i].onclick = function() {
					h4li = this.nextSibling;
					while(h4li.innerHTML == null) {
						h4li = h4li.nextSibling;
					}
					if (h4li.style.display == "none") {
						slidedown(h4li.id);
						this.style.backgroundPosition = "right 0";
						this.title = "Click to collapse '" + this.innerHTML + "'";
					} else {
						slideup(h4li.id);
						this.style.backgroundPosition = "right -100px";
						this.title = "Click to expand '" + this.innerHTML + "'";
					}
				}
				} catch(e) {alert(e)}
			
			
		}
	}
}

/*	Goes through the page and gets any placeholder compare
	links and adds code to make it a compare link */
function prepareAddToCompare() {
	var product_listing = gID('product_listing');
	if (product_listing) {
		
		product_listing.innerHTML = '<div id="compareproductsbox"></div>' + product_listing.innerHTML;
		
		var lis = product_listing.getElementsByTagName("li");
		for (var i=0; i < lis.length; i++) {
			if (lis[i].className == "compare") {
				var proddetails = lis[i].id.split("_");
				var sku = proddetails[1];
				var cat = proddetails[2];
				if (gID('product_title_' + sku + "_normal")) {
					var prodname = gID('product_title_' + sku + "_normal").innerHTML;
					var proddesc = gID('product_title_' + sku + "_normal").title.replace(prodname + " - ", "");					
				} else {
					var prodname = gID('product_title_' + sku + "_featured").innerHTML;
					var proddesc = gID('product_title_' + sku + "_featured").title.replace(prodname + " - ", "");						
				}
				lis[i].innerHTML = "<a id=\"compare_link_" + sku + "\" href=\"javascript:addToCompareAndDrawBox('" + cat + "','" + sku + "', '" + prodname + "', '" + proddesc + "');\" title=\"Add this product to my compare list\" class=\"compare_link\"><span>Add to</span> Compare</a>";
	
			}
		}
	}
}

addLoadEvent(prepareAddToCompare);
addLoadEvent(makeRefinementHeadersToggle);
addLoadEvent(categoryInit);