/* check to ensure rollovers are supported in browser */
	function preloadImages(){
		if (document.images)
		{
			/* preload the images */
			/* ### Top Menu ### */
			new_over = new Image();
			new_over.src = "images/header/1_new_on.gif";
			new_org = new Image();
			new_org.src = "images/header/1_new.gif";
		
			brand_over = new Image();
			brand_over.src = "images/header/2_brand_on.gif";
			brand_org = new Image();
			brand_org.src = "images/header/2_brand.gif";
		
			catalog_over = new Image();
			catalog_over.src = "images/header/3_catalog_on.gif";
			catalog_org = new Image();
			catalog_org.src = "images/header/3_catalog.gif";
		
			disp_over = new Image();
			disp_over.src = "images/header/4_display_on.gif";
			disp_org = new Image();
			disp_org.src = "images/header/4_display.gif";
		
			customer_over = new Image();
			customer_over.src = "images/header/5_customer_on.gif";
			customer_org = new Image();
			customer_org.src = "images/header/5_customer.gif";
		
			/* ### Brand Menu ### */
			nicka_over = new Image();
			nicka_over.src = "images/brand/1_nk_on.gif";
			nicka_org = new Image();
			nicka_org.src = "images/brand/1_nk.gif";
		
			absolute_over = new Image();
			absolute_over.src = "images/brand/2_absolute_on.gif";
			absolute_org = new Image();
			absolute_org.src = "images/brand/2_absolute.gif";
		
			tyche_over = new Image();
			tyche_over.src = "images/brand/3_tyche_on.gif";
			tyche_org = new Image();
			tyche_org.src = "images/brand/3_tyche.gif";
		
			esc_over = new Image();
			esc_over.src = "images/brand/4_esc_on.gif";
			esc_org = new Image();
			esc_org.src = "images/brand/4_esc.gif";	
		}
	}
/* function to set image to on state */

	function over(imageName)
	{
		if (document.images && imageName != active)
		{
			image =	eval(imageName+"_org") 
			image.src = document[imageName].src;
			document[imageName].src = eval(imageName+"_over.src");
		}
	}

/* function to reset image back to off state */

	function out(imageName)
	{
		if (document.images && imageName != active)
		{
			document[imageName].src = eval(imageName+"_org.src");
		}
	}
	
	var active = '';
	function setActive()
	{
		active = document.getElementById("active_menu-nav").name;
	}