function open_win(picpath, xpic, ypic, gname)
  {
  path = "./pic_details.php?picpath=" + picpath + "&name=" + gname;
  w = xpic;
  h = ypic;
  wname = "fullpic";
  // initialize winX and winY to default values
  // for cases where Screen object isn't supported 
  var winX = 50;
  var winY = 50;
  var resize = "";
  var scroll = "";
  // only set new values if 4.0 browser
  if (parseInt(navigator.appVersion) >= 4)
    {
    winX = (screen.availWidth - w)*.5;
    winY = (screen.availHeight - h)*.5;
    }
  resize = "resizable=no,";
  scroll = "scrollbars=no,";
//  newWindow = window.open("",wname,"titlebar=yes,location=no,"+resize+scroll+"width="+w+",height="+h+",left="+winX+",top="+winY);
//  newWindow.close();
  newWindow = window.open(path,wname,"titlebar=yes,location=no,"+resize+scroll+"width="+w+",height="+h+",left="+winX+",top="+winY);
  }