Ayuda Expertos Me urge...

[nicaragüa]

Les dejo el codigo por si alguien pueda dar una mano..

Código:

<SCRIPT language=JavaScript>
<!--

var ns = (document.layers)? true:false;
var ie = (document.all)? true:false;
var visibleMenu = "";
var visibleThumb = "promoTn";

function background() {
	
	var bgndNumber = Math.round(Math.random() * 6) + 1;
	if (ie) {
		document.bgnd.src = "/images/" + bgndNumber + ".jpg";
	} else if(ns) {
		document.bgndImg.document.bgnd.src = "/images/" + bgndNumber + ".jpg";
	}
}

function evalObj(objName) {

	var objPath = "";
 	if(ns){
      objPath = eval("document." + objName);
   	} else if(ie) {
      objPath = eval(objName + ".style");
   	}
	return objPath;
	
}

function openMenu(layerID) {

	if (visibleMenu != "") {
		var visibleLayer = evalObj(visibleMenu);
		visibleLayer.visibility = "hidden";
	} 

	var theLayer = evalObj(layerID );
	theLayer.visibility = "visible";
	visibleMenu = layerID;
}

function closeMenu() {

	if (visibleMenu != "") {
	//	alert("the open menu is " + visibleMenu);
		var visibleLayer = evalObj(visibleMenu);
		visibleLayer.visibility = "hidden";
	} 
}

function showThumb(layerID) {

	var visibleLayer = evalObj(visibleThumb);
	visibleLayer.visibility = "hidden";
	var theLayer = evalObj(layerID );
	theLayer.visibility = "visible";
	visibleThumb = layerID;
}

function swapImage (image_name, new_image) {
	
	if (ie) {
		var the_image = eval("document." + image_name);
	} else if(ns) {
		var the_image = eval("document.smallTmb.document." + image_name);
	}		
	the_image.src = new_image;

}

document.onclick = closeMenu;
if (ns) document.captureEvents(Event.CLICK);

//-->
</SCRIPT>