function bNavegador() {
  if( navigator.appName )
  {
    if( navigator.appName == "Microsoft Internet Explorer")  return 1;
    if( navigator.appName == "Netscape")  return 2;
  }
  return 0;
}
	
var contador = 1;

function AbreVentana(ventana,nick,pass,tu){
  var w=640, h=480;
  var windowName = new String( contador );
  windowName = "v" + windowName;
  var x = bNavegador();	
  if (window.screen && window.screen.availHeight) {
    h = window.screen.availHeight - 63; // 63
    if( x==2 ) h = h - 11;
    w = window.screen.availWidth - 4;
  }

if (ventana==1)
  window.open("index1.php?valuee=1", windowName, "status=yes,resizable=yes,toolbar=no,scrollbars=yes,top=0,left=0,width=" + w + ",height=" + h, 1 );
if (ventana==2)
  window.open("http://www.udch.edu.pe/fiis/intranet/index1.php?valuee=5&nicka=" + nick + "&password=" + pass + "&tu=" + tu + "", windowName, "status=yes,resizable=yes,toolbar=no,scrollbars=yes,top=0,left=0,width=" + w + ",height=" + h, 1 );
contador = contador + 1;
}