// ROLLOVER MAIN NAV IMAGES
function init(){
	// EXTERNL LINK
	if (!W3CDOM) return;
	var anchors = document.getElementsByTagName("a");
	for(var i=0; i<anchors.length; i++){
		var anchor = anchors[i];
		if(anchor.getAttribute("href") && anchor.getAttribute("rel")=="external") anchor.target = "_blank";
    }
	// MAIN NAV
	if (!W3CDOM) return;
	var nav = document.getElementById("mainnav");
	var imgs = nav.getElementsByTagName("img");
	for (i=0; i<imgs.length; i++) {
		imgs[i].onmouseover = main_over;
		imgs[i].onmouseout = main_off;
		var suffix = imgs[i].src.substring(imgs[i].src.lastIndexOf("."));
		mainOff[i] = new Image();
		mainOff[i].src = imgs[i].src;
		mainOver[i] = new Image();
		mainOver[i].src = imgs[i].src.substring(0,imgs[i].src.lastIndexOf(".")) + "_1" + suffix;
		imgs[i].number = i;
	}
	
	// UTILITY NAV
	if (!W3CDOM) return;
	var nav = document.getElementById("utilitynav");
	var imgs = nav.getElementsByTagName("img");
	for (i=0; i<imgs.length; i++) {
		imgs[i].onmouseover = utility_over;
		imgs[i].onmouseout = utility_off;
		var suffix = imgs[i].src.substring(imgs[i].src.lastIndexOf("."));
		utilityOff[i] = new Image();
		utilityOff[i].src = imgs[i].src;
		utilityOver[i] = new Image();
		utilityOver[i].src = imgs[i].src.substring(0,imgs[i].src.lastIndexOf(".")) + "_1" + suffix;
		imgs[i].number = i;
	}
}

function main_over() {
	this.src = mainOver[this.number].src;
}

function main_off() {
	this.src = mainOff[this.number].src;
}

function utility_over() {
	this.src = utilityOver[this.number].src;
}

function utility_off() {
	this.src = utilityOff[this.number].src;
}
var W3CDOM = (document.createElement && document.getElementsByTagName);

var mainOver = new Array();
var mainOff = new Array();

var utilityOver = new Array();
var utilityOff = new Array();

	
window.onload = init;