window.onerror = null;

//

var img_path = "/i/";
var img_menu_dir = "m";
var img_ext = ".jpg";
var active_img_suffix = "s";

function preloadImg(file){
	image = new Image();
    image.src = img_path + img_menu_dir + "/" + file + img_ext;
}
  
function show(e){
	var el = window.event ? window.event.srcElement : e.currentTarget;
	var str = img_menu_dir + "\\/(\\d)\\" + img_ext;
	var re = new RegExp(str, "i");
	el_src = el.src;
	r = el_src.match(re);
	if (r) el.src = img_path + img_menu_dir + "/" + r[1] + active_img_suffix + img_ext;
}

function hide(e){
	var el = window.event ? window.event.srcElement : e.currentTarget;
	var str = img_menu_dir + "\\/(\\d)" + active_img_suffix + img_ext;
	var re = new RegExp(str, "i");
	el_src = el.src;
	r = el_src.match(re);
	if (r) el.src = img_path + img_menu_dir + "/" + r[1] + img_ext;
}

function init(){
	if (document.images){
		var img_item = img_item_src = r = null;
		var str = img_menu_dir + "\\/(\\d)\\" + img_ext;
		var re = new RegExp(str, "i");
		for (var i = 0; (img_item = document.getElementsByTagName("img").item(i)); i++){
			img_item_src = img_item.src;
			r = img_item_src.match(re);
			if (!r) continue; // !!! 
			preloadImg(r[1] + active_img_suffix);
			if (img_item.addEventListener){
				img_item.addEventListener("mouseover", show, false);
				img_item.addEventListener("mouseout", hide, false);
			}else if (img_item.attachEvent){
				img_item.attachEvent("onmouseover", show);
				img_item.attachEvent("onmouseout", hide);
			}
		}
	}
}

var root = window.addEventListener || window.attachEvent ? window : document.addEventListener ? document : null;
if (root){
    if (root.addEventListener) root.addEventListener("load", init, false);
    else if (root.attachEvent) root.attachEvent("onload", init);
}