function chgimg(id, imgname) {
 if(document.images) {
  if(imgs[imgname]) {
    document.images[id].src = imgs[imgname].src;
  }
  else {
    document.images[id].src = imgname;
  }
 }
}

function winOpen(winName,url,W,H){
  var WinD11=window.open(url,winName,'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,width='+W+',height='+H+'');
  }