aboutus_up = new Image();
aboutus_up.src = "images/menu/aboutus_out.jpg";
aboutus_over = new Image();
aboutus_over.src = "images/menu/aboutus_over.jpg";
services_up = new Image();
services_up.src = "images/menu/services_out.jpg";
services_over = new Image();
services_over.src = "images/menu/services_over.jpg";
products_up = new Image();
products_up.src = "images/menu/products_out.jpg";
products_over = new Image();
products_over.src = "images/menu/products_over.jpg";
contactus_up = new Image();
contactus_up.src = "images/menu/contactus_out.jpg";
contactus_over = new Image();
contactus_over.src = "images/menu/contactus_over.jpg";

function switch_img(img,imgloc,state){
	switch (state){
		case "over":	
			switch(imgloc){
				case "aboutus":
					img.src = aboutus_over.src;
					break;
				case "services":
					img.src = services_over.src;
					break;
				case "products":
					img.src = products_over.src;
					break;
				case "contactus":
					img.src = contactus_over.src;
					break;
				}
			break;
		case "out":
			switch(imgloc){
				case "aboutus":
					img.src = aboutus_up.src;
					break;
				case "services":
					img.src = services_up.src;
					break;
				case "products":
					img.src = products_up.src;
					break;
				case "contactus":
					img.src = contactus_up.src;
					break;	
				}
			break;
		
	}
	
	
}