function MM_preloadImages() 
{
 //v3.0
  var d=document;
   if (d.images)
   {
      if(!d.MM_p) d.MM_p=new Array();
      var i,j=d.MM_p.length,a=MM_preloadImages.arguments;
      for(i=0; i<a.length; i++)
    		if (a[i].indexOf("#")!=0)
    		{
    		   d.MM_p[j]=new Image;
    		   d.MM_p[j++].src=a[i];
    		}
   }
}

function MM_swapImgRestore() 
{
//v3.0
  var i,x,a=document.MM_sr;
   for(i=0; a && i<a.length &&(x=a[i])&& x.oSrc; i++)
    x.src=x.oSrc;
}

function MM_swapImage() 
{
 //v3.0
  var i,j=0,x,a=MM_swapImage.arguments;
  document.MM_sr=new Array;
   for(i=0;i<(a.length-2);i+=3)
    if ((x=MM_findObj(a[i]))!=null)
    {
   		document.MM_sr[j++]=x; 
   		if(!x.oSrc) x.oSrc=x.src; 
   		x.src=a[i+2];
    }
}

function MM_findObj(n, d) 
{
 //v4.01
 var p,i,x;
  if (!d) d=document;
  if ((p=n.indexOf("?"))>0 && parent.frames.length)
  {
   d=parent.frames[n.substring(p+1)].document;
   n=n.substring(0,p);
  }
  if (!(x=d[n]) && d.all) x=d.all[n];
  for (i=0;!x&&i<d.forms.length;i++)
  	 x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++)
  	 x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n);
  return x;
}

function asegurar(entry) 
{
    
	var WordsParaQuitar = new Array();
	WordsParaQuitar = ["and", "or", "a", "de", "y", "o", "el", "la", "los", "las","e","y","u","i"];

	var abre = String.fromCharCode(60,37);
	var cierra = String.fromCharCode(37,62);
	var CharsParaQuitar = new Array();
	CharsParaQuitar = ["-","%","#", "@", "'", ";", ".", ",", "|","?", abre, cierra];

	var temp = entry.value; // texto a filtrar
	var i;
    var quitarChar, quitarWord;
    
	//Primero quito las palabras para que vaya + rápido
	for (i=0; i<WordsParaQuitar.length; i++){
		quitarWord =" "+WordsParaQuitar[i] + " ";
		temp = replaceChars(quitarWord, temp);
		quitarWord = quitarWord.toUpperCase();
		temp = replaceChars(quitarWord, temp);
	}
	//Después quito los caracteres y conjuntos de caracteres
	for (i=0; i<CharsParaQuitar.length; i++){
		quitarChar = CharsParaQuitar[i];
		temp = replaceChars(quitarChar, temp);
	}
	if (temp.length < 3)
	{
	    alert("Debe introducir más de 2 caracteres.");
	    return false;
	}else {
	
	if (entry.value!=temp) 
	entry.value = temp;

    return true;
    }
}

function replaceChars(out, deltexto) 
{
	var add = " ";
	var pos, i, j, ele;

//	alert(out);

	while (deltexto.indexOf(out)>-1) {
				pos= deltexto.indexOf(out);
				deltexto = (deltexto.substring(0, pos) + add +
				deltexto.substring((pos + out.length), deltexto.length));
	}
	return deltexto;
}