/*
   *    openWindow : Abre un popup
   *    @param width : Ancho de la ventana
   *    @param height : alto de la ventana
   *    return : object Window, referencia a la nueva ventana
   */
   function openWindow(url, width ,height){
       if(url!=''){
        var win=window.open(url,"ayuda","status=1,toolbar=0,location=0,menubar=0,directories=0,resizable=1,scrollbars=auto,height="+height+",width="+width);
           //var win=window.open(url,"ayuda","status=1,toolbar=0,location=0,menubar=0,directories=0,resizable=1,scrollbars=auto,height="+height+"width=150");
           win.focus();
       }
       return win;
   }