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_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 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_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
function esFecha(dia,mes,ano)
{
	var num_dias;
	if(parseInt(mes)>=1 && parseInt(mes)<=12)
	{
		switch(parseInt(mes))
		{
			case 1 : num_dias=31; break;
			case 2 : num_dias=((ano % 4)==0) ? 29 : 28; break;
			case 3 : num_dias=31; break;
			case 4 : num_dias=30; break;
			case 5 : num_dias=31; break;
			case 6 : num_dias=30; break;
			case 7 : num_dias=31; break;
			case 8 : num_dias=31; break;
			case 9 : num_dias=30; break;
			case 10 : num_dias=31; break; 
			case 11 : num_dias=30; break;
			case 12 : num_dias=31; break;
			default : num_dias=31; 
		}
		if(parseInt(dia)<=num_dias)
		{
			return true;
		}
		else
		{
			return false;
		}
	}
	else
	{
		return false;
	}
}
function emailCheck(emailStr)
{

	var checkTLD=1;
	var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
	var emailPat=/^(.+)@(.+)$/;
	var specialChars="\\(\\)><@,;:\\\\\\\"\\.\\[\\]";
	var validChars="\[^\\s" + specialChars + "\]";
	var quotedUser="(\"[^\"]*\")";
	var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
	var atom=validChars + '+';
	var word="(" + atom + "|" + quotedUser + ")";
	var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
	var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
	var matchArray=emailStr.match(emailPat);

	if (matchArray==null)
	{
		alert("La dirección de email parece incorrecta.");
		return false;
	}

	var user=matchArray[1];
	var domain=matchArray[2];

	for (i=0; i<user.length; i++)
	{
		if (user.charCodeAt(i)>127)
		{
		alert("El nombre de usuario contiene caracteres inválidos.");
		return false;
		}
	}

	for (i=0; i<domain.length; i++)
	{
		if (domain.charCodeAt(i)>127)
		{
		alert("El nombre de dominio contiene caracteres inválidos.");
		return false;
		}
	}

	if (user.match(userPat)==null)
	{
		alert("El nombre de usuario no parece ser válido");
		return false;
	}

	var IPArray=domain.match(ipDomainPat);

	if (IPArray!=null)
	{
		for (var i=1;i<=4;i++)
		{
			if (IPArray[i]>255)
			{
				alert("La dirección IP no es válida.");
				return false;
			}
		}
		return true;
	}

	var atomPat=new RegExp("^" + atom + "$");
	var domArr=domain.split(".");
	var len=domArr.length;

	for (i=0;i<len;i++)
	{
		if (domArr[i].search(atomPat)==-1)
		{
			alert("El nombre de dominio no parece ser válido.");
			return false;
		}
	}

	if (checkTLD && domArr[domArr.length-1].length!=2 && domArr[domArr.length-1].search(knownDomsPat)==-1)
	{
		alert("La direccion de email debe terminar con un dominio correcto o con dos letras del pais.");
		return false;
	}

	if (len<2)
	{
		alert("La dirección no tiene un nombre de servidor");
		return false;
	}

	return true;
}

function checkStringNumerico()
{
    var checkStr="0123456789";
	var xkey;
	if (document.all)
	{
		xkey=window.event.keyCode;
		if(xkey=="13")
			event.returnValue = true;
		else
	        if (!(checkStr.indexOf(String.fromCharCode(xkey)) >= 0))
	            return false;
			else
				return true;
	}
}

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;       // Get length of string
      while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
         i--;
      s = s.substring(0, i+1);
   }

   return s;
}

function trim(str)
{
   return rtrim(ltrim(str));
}

function checkSearchForm(objForm)
{
	if(trim(objForm.edtKeyword.value)=="")
		return false;
	return true
}


function openPaso1()
{
	var objWindow=window.open("paso1.php", "ayuda", "width=600,height=193,scrollbars=no");
	objWindow.focus();
}

function openPaso3()
{
	var objWindow=window.open("paso3.php", "ayuda", "width=600,height=373,scrollbars=no");
	objWindow.focus();
}

function openPaso4()
{
	var objWindow=window.open("paso4.php", "ayuda", "width=600,height=265,scrollbars=no");
	objWindow.focus();
}