function isDefined(obj){
	try{
		return (typeof eval(obj) != 'undefined');
	}
	catch(error){
		return false;
	}
}

function click_nav_cat(category_id, cookie_name){
	var row_id = "lnav_cat_" + category_id + "_sub_cats";
	var img_id = "lnav_cat_" + category_id + "_img";

	var cookie_value = Get_Cookie(cookie_name);
	if(cookie_value != null){
		var cookie_value_array = cookie_value.split(",");
	}
	else{
		var cookie_value_array = new Array();
	}


	var row = document.getElementById(row_id);
	var img = document.getElementById(img_id);
	if (row !=null){
		if(row.style.display == "block" || row.style.display == ""){
			row.style.display = "none";
			img.src = "/sysimages/arrow_right.gif"

			for(y=cookie_value_array.length-1; y>=0 ; y--){
				if (cookie_value_array[y] == category_id){
						cookie_value_array.splice(y,1);
				}
			}

		}
		else{
			row.style.display = "";
			img.src = "/sysimages/arrow_down.gif"
			
			var in_list = false;
			for(y=0; y < cookie_value_array.length && in_list == false; y++){
				if (cookie_value_array[y] == category_id) in_list = true;
			}
			if (!in_list) cookie_value_array.push(category_id);


		}
	}
		
	cookie_value = cookie_value_array.join();
	Set_Cookie(cookie_name, cookie_value); //Use Session Cookie Only

}

function Get_Cookie(name) 
{
 				var start = document.cookie.indexOf(name+"=");
 				var len = start+name.length+1;
 				if ((!start) && (name != document.cookie.substring(0,name.length))) return null;
 				if (start == -1) return null;
 				var end = document.cookie.indexOf(";",len);
 				if (end == -1) end = document.cookie.length;
 				return unescape(document.cookie.substring(len,end));
}

function Set_Cookie(name,value,expires,path,domain,secure) 
{
  				document.cookie = name + "=" +escape(value) +
      			( (expires) ? ";expires=" + expires.toGMTString() : "") +
      			( (path) ? ";path=" + path : "") + 
      			( (domain) ? ";domain=" + domain : "") +
      			( (secure) ? ";secure" : "");
}

function Delete_Cookie(name,path,domain)
{
	if (Get_Cookie(name)) document.cookie = name + "=" +
        ( (path) ? ";path=" + path : "") +
	( (domain) ? ";domain=" + domain : "") +
     			";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}


function swapImage(image_name, image_src){
	window.document[image_name].src = image_src;
}


function openshippingwindow()
{
	newwin = window.open('/_checkout/index.cfm?fuseaction=shipping_info','shippingwindow','width=450,height=500,scrollbars=yes');
	newwin.creator = self;
};

function submitkeywords()
{
	var keywords = window.document.keywordsearchform.dropkeywords.options[window.document.keywordsearchform.dropkeywords.selectedIndex].value;
	var newkeywords = keywords.replace(/ /g, ",");
	window.location.href='/index.cfm?fa=s&keywords='+newkeywords;
};

// image swapping (rollovers)
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

//Driving Comfort Header DHTML Menu Function
startList = function() {
	if (document.all&&document.getElementById) {
		navRoot = document.getElementById("nav");
		if (navRoot != null){
			for (i=0; i<navRoot.childNodes.length; i++) {
				node = navRoot.childNodes[i];
				if (node.nodeName=="LI") {
					node.onmouseover=function() {
						this.className+=" over";
					}
					node.onmouseout=function() {
						this.className=this.className.replace(" over", "");
					}
				}
			}
		}
	}
}
window.onload=startList;