function divshow1(obj)
{document.getElementById("img9").src="/images/product_menu01a.jpg";
document.getElementById("img10").src="/images/product_menu02a.jpg";
document.getElementById("img12").src="/images/product_menu04a.jpg";
document.getElementById("div9").style.display="none";
document.getElementById("div10").style.display="none";
document.getElementById("div12").style.display="none";
switch(obj){
 case 9:image= "/images/product_menu01b.jpg"; break;
 case 10:image= "/images/product_menu02b.jpg";break;
 case 12:image= "/images/product_menu04b.jpg";break;
}
document.getElementById("img"+obj).src=image;
document.getElementById("div"+obj).style.display="block";
}