switch(menuID)
		{
			case 1 : 
				img1off.src = "/images/img_aboutus_1.gif";
				document.img1.src="/images/img_aboutus_1.gif"; 
				break;
			case 2 : 
				img2off.src = "/images/img_partner_1.gif";
				document.img2.src="/images/img_partner_1.gif"; 
				break;
			case 3 : 
				img3off.src = "/images/img_Solutions_1.gif";
				document.img3.src="/images/img_Solutions_1.gif"; 
				break;
			case 4 : 
				img4off.src = "/images/img_products_1.gif";
				document.img4.src="/images/img_products_1.gif"; 
				break;
			case 5 : 
				img5off.src = "/images/img_service_1.gif";
				document.img5.src="/images/img_service_1.gif"; 
				break;
			case 6 : 
				img6off.src = "/images/img_support_1.gif";
				document.img6.src="/images/img_support_1.gif"; 
				break;
			case 7 : 
				img7off.src = "/images/img_news_1.gif";
				document.img7.src="/images/img_news_1.gif"; 
				break;		
		}