// VARIABLE DECLARATIONS

	// whitespace characters
	var whitespace = " \t\n\r";
	var digits = "0123456789";
	var lowercaseLetters = "abcdefghijklmnopqrstuvwxyz"
	var uppercaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
	// decimal point character differs by language and culture
	var decimalPointDelimiter = "."
	var defaultEmptyOK = false


	// Funciones para el cambio de imgs 

	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_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_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];}
	}

	<!--
    var agt = navigator.userAgent.toLowerCase();
    if((agt.indexOf("msie 5") != -1) && (agt.indexOf("mac") != -1)){
      document.writeln("<style type=\"text/css\">#boxContent \{ position: absolute \}</style>")
    }
    //-->


/**
	Abre una ventana nueva del navegador centrada en la pantall.
*/
function openWindow(cDireccion, nAlto, nAncho, showMenuBar, showToolBar) {

    var myWindow= null;

    if(nAlto==null) {
        nAlto='480';
    }

    if(nAncho==null) {
        nAncho='640';
    }

    if(showMenuBar==null){
        showMenuBar = 'no';
    }

    if(showToolBar==null){
        showToolBar='no';
    }

    var winl = (screen.width-nAncho)/2;
    var wint = (screen.height-nAlto)/2;
	
	winl = 100;
    wint = 100;

    var settings = '';

    settings+='height='+nAlto+',';
    settings+='width='+nAncho+',';
    settings+='top='+wint+',';
    settings+='left='+winl+',';
    settings+='menubar='+showMenuBar+',';
    settings+='toolbar='+showToolBar+',';
    settings+='directories=no,';
    settings+='location=no,';
    settings+='scrollbars=yes,';
    settings+='status=no,';
    settings+='resizable=yes,';
    settings+='modal=yes,';
    settings+='titlebar=no,';
    settings+='dialog=yes';

    myWindow = window.open(cDireccion,"my_new_window", settings );

    if(parseInt(navigator.appVersion) >= 4){
        myWindow.focus();
    }

    return null;

};



function ponerTamano(ancho, alto)
{
	var navegador = navigator.appName;

	if(document.documentElement.clientWidth != ancho ||
	   document.documentElement.clientHeight != alto)
	{
		if(navegador.indexOf("Micro") == -1)
		{	
			self.resizeTo(ancho-5,alto+25);
		}else{
			//alert(ancho+"-"+alto);
			self.resizeTo(ancho,alto);
			self.resizeTo(ancho,alto);
		}


	}
}


function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}


function isWhitespace (s)

{   var i;

    // Is s empty?
    if (isEmpty(s)) return true;

    // Search through string's characters one by one
    // until we find a non-whitespace character.
    // When we do, return false; if we don't, return true.

    for (i = 0; i < s.length; i++)
    {   
        // Check that current character isn't whitespace.
        var c = s.charAt(i);

        if (whitespace.indexOf(c) == -1) return false;
    }

    // All characters are whitespace.
    return true;
}



function isEmail (s)
{   

	if (isEmpty(s)) 
       if (isEmail.arguments.length == 1) return defaultEmptyOK;
       else return (isEmail.arguments[1] == true);
   
    // is s whitespace?
    if (isWhitespace(s)) return false;
    
    // there must be >= 1 character before @, so we
    // start looking at character position 1 
    // (i.e. second character)
    var i = 1;
    var sLength = s.length;

    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }

    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;

    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }

    // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;


}