function CreaMenuIzquierda () {
   //                Menú sale por izquierda de la pantalla
   if (document.all) {
      document.write ('<DIV ID="slidemenubar2" ONMOUSEOVER="pull()" ONMOUSEOUT="draw()">');
   } else {
      document.write ('<LAYER ID="slidemenubar" ONMOUSEOVER="pull()" ONMOUSEOUT="draw()">');
   }

   var sitems = new Array();
   var sitemlinks = new Array();

   sitems[0] = "&nbsp;&nbsp;Inicio";
   sitems[1] = "&nbsp;&nbsp;Mandar un e-mail";
   sitems[2] = "&nbsp;&nbsp;Poner publicidad";

   //These are the links pertaining to the above text.
   sitemlinks[0] = "./temas.asp";
   sitemlinks[1] = "javascript:mail();";
   sitemlinks[2] = "javascript:mail();";

   for (i = 0; i <= (sitems.length - 1); i++)
      document.write ('<a href=' + sitemlinks[i] + '>' + sitems[i] + '</a><br>');

   if (document.all) {
      document.write ('</DIV>');
      themenu = document.all.slidemenubar2.style;
      rightboundary = 5;
      leftboundary = -90;
   } else {
      document.write ('</LAYER>');
      themenu = document.layers.slidemenubar;
      rightboundary = 90;
      leftboundary = 5;
   }
}

function regenerate () {
   window.location.reload ();
}

function regenerate2 () {
   if (document.layers)
      setTimeout("window.onresize = regenerate", 400);
}

function pull () {
   if (window.drawit)
      clearInterval (drawit);
   pullit = setInterval ("pullengine()", 50);
}

function draw() {
   clearInterval (pullit);
   drawit = setInterval ("drawengine()", 50)
}

function pullengine () {
   if (document.all && themenu.pixelLeft < rightboundary)
      themenu.pixelLeft += 5;
   else
      if (document.layers && themenu.left < rightboundary)
         themenu.left += 5;
      else
         if (window.pullit)
            clearInterval(pullit);
}

function drawengine (){
   if (document.all && themenu.pixelLeft > leftboundary)
      themenu.pixelLeft -= 15;
   else
      if(document.layers && themenu.left > leftboundary)
         themenu.left -= 15;
      else
         if (window.drawit)
            clearInterval (drawit);
}

window.onload = regenerate2;