function registrarVisita(idFoto)
{

new Ajax.Request("services/multiservicio.php?servicio=4&idFoto=" + idFoto, {
        method: "get",
        requestHeaders: ['If-Modified-Since', new Date(0)],
        onLoading: function(transport) {
            
        },
        onSuccess: function(transport) {
            document.getElementById("divfoto"+idFoto).innerHTML=transport.responseText+" veces vista";
        },
        onFailure: function(transport) {
            alert(transport.responseText);
        }
    });

}




function SoloNum(evt)
{
  evt = (evt) ? evt : event
  var key = (evt.which) ? evt.which : evt.keyCode;

  if (key > 47 && key < 58 || key == 8 || key == 13)
  {
   return true;

  }
  else
  {
   return false;
  }
}

/*quita los espacios al lado de una cadena */
function LTrim(str)
{
   var whitespace = new String(" \t\n\r");

   var s = new String(str);

   if (whitespace.indexOf(s.charAt(0)) != -1) {

      var j=0, i = s.length;

      while (j < i && whitespace.indexOf(s.charAt(j)) != -1)
         j++;

      s = s.substring(j, i);
   }
   return s;
}


function RTrim(str)
{
   var whitespace = new String(" \t\n\r");

   var s = new String(str);

   if (whitespace.indexOf(s.charAt(s.length-1)) != -1) {
      var i = s.length - 1;
      while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
         i--;

      s = s.substring(0, i+1);
   }

   return s;
}
/*quita esocios de la cadena a la derecha y a la izquierda*/
function Trim(str)
{
  return RTrim(LTrim(str));
}


function AbrirVentana(page,x,y)
{
	  var w = (screen.width / 2) - (x/2);
      var h = (screen.height / 2) - (y/2) - 20;
	  var Ventana = "Window_"+x+y;
 	  var win = window.open(page,Ventana,'toolbar=no,location=no,status=yes,menubar=no,scrollbars=no,resizable=no,width='+x+',height='+y+',left='+w+', top='+h);
	  win.focus();
	  return false;
}