var imageArray = new Array("home", "company", "product", "news", "test");

function img_preload(imageArray){
	var tempImages = new Array();
	for (var i=0;i<imageArray.length;i++)
	{
		tempImages[i] = new Image();tempImages[i].src = '../images/menu/' + imageArray[i] + '_hov.gif';
	}
}
function init(value) {
	return (document.getElementById) ? 
		document.getElementById(value):document.all[value];
}
function img_hover(id) {
	var obj=init(id);
	var old_src=obj.src;
	var path = '../images/menu/';
	var ext = '_hov.gif';
	var new_src = path + id + ext;
	obj.src=new_src;
	obj.onmouseout=function() {
		obj.src=old_src;
	}
}
sfHover = function() {
	var sfEls = document.getElementById("menu").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className = "sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className = '';
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);
img_preload (imageArray);