function openPage(url, width, height, t)
{
  var s;
  
  if (width >= screen.availWidth) width = Math.floor(screen.availWidth * 0.9);
  if (height >= screen.availHeight) height = Math.floor(screen.availHeight * 0.9);
  if (t == 0) {
    if (width >= screen.availWidth || height >= screen.availHeight)
      s = ',menubar=no,scrollbars=yes,status=no,toolbar=no,resizable=yes,screenX=20,screenY=20';
    else
      s = ',menubar=no,scrollbars=no,status=no,toolbar=no,resizable=no,screenX=20,screenY=20';
  } else {
    if (width >= screen.availWidth || height >= screen.availHeight)
      s = ',menubar=no,scrollbars=yes,status=no,toolbar=no,resizable=yes,screenX=20,screenY=20';
    else
      s = ',menubar=no,scrollbars=yes,status=no,toolbar=no,resizable=yes,screenX=20,screenY=20';
  }
  
  window.open(url, '_blank', 'width='+width+',height='+height+s);
}

function openProduct(url, width, height)
{
  var s = 'width=' + width + ',height=' + height + ',menubar=no,scrollbars=no,status=no,toolbar=no,resizable=no,screenX=20,screenY=20';
  window.open(url, '_blank', s);
}