var rollover1_down = new Image(333, 50);
		var rollover1_over = new Image(333, 50);
			rollover1_down.src = "/jc/img/navbuttons/who_we_are.jpg";
			rollover1_over.src = "/jc/img/navbuttons/who_we_are_over.jpg";
		var rollover2_down = new Image(333, 50); 
		var rollover2_over = new Image(333, 50); 
			rollover2_down.src = "/jc/img/navbuttons/online_help.jpg"; 
			rollover2_over.src = "/jc/img/navbuttons/online_help_over.jpg"; 
		var rollover3_down = new Image(333, 50); 
		var rollover3_over = new Image(333, 50); 
			rollover3_down.src = "/jc/img/navbuttons/contact.jpg"; 
			rollover3_over.src = "/jc/img/navbuttons/contact_over.jpg"; 
		var rollover4_down = new Image(333, 50); 
		var rollover4_over = new Image(333, 50); 
			rollover4_down.src = "/jc/img/navbuttons/sitemap.jpg"; 
			rollover4_over.src = "/jc/img/navbuttons/sitemap_over.jpg";