var InternetExplorer = navigator.appName.indexOf("Microsoft") != -1;

function jc(which_image, which_div)
{
 if (document.layers)
  {
  	//alert("layers")
  	return document.eval(which_div).document.eval(which_image)
  }
 if (document.all)
 {
 	//alert("all")
 	return eval(which_image)
 }
 if (document.getElementById)
 {
 	//alert("elementById")
 	returnvalue = "document." + which_image
 	return eval(returnvalue)
 }
}


function show_menu(sub_header)
{
	for(i=0; i<5; i++)
	{
		
 		dom=eval(docObj + sub_heads[i] + styleObj);
 		dom.visibility = "hidden";
	}

 	dom=eval(docObj + sub_header + styleObj);
 	dom.visibility = "visible";
}

function show(sub_header)
{
 	//alert("test")
 	dom=eval(docObj + sub_header + styleObj);
 	dom.visibility = "visible";
}

function hide(sub_header)
{
 	dom=eval(docObj + sub_header + styleObj);
 	dom.visibility = "hidden";
}
var timeout_id;

function call_timeout(sub_menu)
{
  timeout_id = setTimeout("hide('" + sub_menu +"')", 800)
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

//This is the rollover, script

function rollOver(which_img, which_div)
{
if (preloadFlag == true)
	{
 	over_image = which_img + "_over.src";
	over_source =  jc(which_img, which_div)
	eval(over_source).src  = eval(over_image);
	}
}

//This is the rollout script
function rollOut(which_img, which_div)
{
if (preloadFlag == true)
	{
   out_image = which_img + "_out.src";
   over_source =  jc(which_img, which_div)
   eval(over_source).src = eval(out_image)
	}
}

function menu_rollover(timeout_id, img_name, layer_name){
//alert(timeout_id)
clearTimeout(timeout_id)
rollOver(img_name, layer_name);

}