// JavaScript Document


function highlightpage(){
	if(!document.getElementsByTagName) return false;
	if(!document.getElementById) return false;
	if(!document.getElementById("head_menu")) return false;
	var nav = document.getElementById("head_menu");
	var links = nav.getElementsByTagName("a");
	
	for(var i=0; i<links.length; i++){
		var linkurl = links[i].getAttribute("href");
		var currenturl = window.location.href;
		if(currenturl.indexOf(linkurl) != -1){
			var linkimages = links[i].getElementsByTagName("img")[0]
			var src_replace = linkimages.getAttribute("src").replace("_off.", "_on.");
			linkimages.setAttribute("src",src_replace);
				
		}
	}
}

if(window.addEventListener) {
	window.addEventListener("load", highlightpage, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", highlightpage);
}