function btnOver(id) {
	var img = document.images[id];
	img.origSrc = img.src;
	var path = img.src.substring(0, img.src.lastIndexOf('.'));
	var ext = img.src.substring(img.src.lastIndexOf('.'), img.src.length);
	if (path.indexOf("_on") == -1){
		img.src = path + "_on" + ext;
	}
}
function btnOut(id){

	var img = document.images[id];
	if (img.origSrc != null) {
		img.src = img.origSrc;
	}
}

function navOver(id) {
	var img = document.images[id];
	img.origSrc = img.src;
	var path = img.src.substring(0, img.src.lastIndexOf('.'));
	var ext = img.src.substring(img.src.lastIndexOf('.'), img.src.length);
	if (path.indexOf("_over") == -1){
		img.src = path + "_over" + ext;
	}
}
function navOut(id){

	var img = document.images[id];
	if (img.origSrc != null) {
		img.src = img.origSrc;
	}
}

var defaultFeat;
var currFeat = defaultFeat;

function featureOver(id) {
	
	if (currFeat != null && currFeat != ""){
		btnOut("icon_"+currFeat);
		document.getElementById("detail_" +currFeat).style.display = "none";
	}
	btnOver("icon_"+id);
	document.getElementById("detail_" +id).style.display = "block";
	currFeat = id;
	
}

function featureOut() {
	if (currFeat != null && currFeat != ""){
		btnOut("icon_"+currFeat);
		document.getElementById("detail_" +currFeat).style.display = "none";
		
	}
	btnOver("icon_"+defaultFeat);
	document.getElementById("detail_" +defaultFeat).style.display = "block";
	currFeat = defaultFeat;
}

/*
* Utility function for replacing characters before passing names
* to analytics tracking functions
*/
function removeSpecialChars(str){
	var re = new RegExp("\\s", "g");
	var tmp = str.replace(re, "+");
	re = new RegExp(",", "g");
	tmp = tmp.replace(re, "");
	return escape(tmp);
}

function getCookie(name){
	var str=""+document.cookie;
	var index1=str.indexOf(name);
	if (index1==-1 || name=="") return ""; 
	var index2=str.indexOf(';',index1);
	if (index2==-1) index2=str.length; 
	return unescape(str.substring(index1+name.length+1,index2));
}

function setCookie(name, value, expires){
	if (expires == null || expires == "")
	{
		document.cookie = name + "=" + escape(value) + ";";
	} else {
		document.cookie = name + "=" + escape(value) + ";expires="+expires;
	}
}