var prod_on = new Image;

function preload(){
prod_on.src = 'img/menu_prod_on.gif';
}

function show(){
	document.getElementById('prod').style.visibility = 'visible';
	document.images['prodimg'].src = prod_on.src;
}

function viewimg(imgname){
	var WindowProp="toolbar=0, location=0, status=0, resizable=1, menubar=0, top=20, left=20, scrollbars=0";
window.open("view_img.php?image="+imgname, "Image", WindowProp);
}