function wopen($url){ window.open($url,
"wopen","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=1000,height=780");
}
function myChgPic(myPicURL){
   document.images["myBigImage"].src = myPicURL;
}