function changeImage(img_name,img_src)
{
	document[img_name].src=img_src;
}

function popupImage(src, img_name)
{
    window.open(src+"&img="+document[img_name].src,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=100,height=100,screenX=150,screenY=150,top=150,left=150')
}