/*菜單*/
function TopNavClick(nid) {
	var navurl = new Array("Index.aspx", "Product.aspx", "Safty.aspx", "Contact.aspx");
	window.location.href = navurl[nid];
}
             
     
/*產品詳情*/        
function changimg(isrc) {
    document.getElementById("bimg").src = isrc;
}