function getPageHeight() {
    var windowHeight
    if (self.innerHeight) {	// all except Explorer
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) { // other Explorers
      windowHeight = document.body.clientHeight;
    }	
    return windowHeight
}

function goOpener() {
   if (window.opener) { 
      var loc = opener.location+'';
      if (loc.match(/disk_auto\.htm/)) {
         window.close();
      } else {
         opener.location = '/disk_auto.htm';
         window.close();
      }
   }
   else window.location = '/disk_auto.htm';
}