/* cabecera_visible.js compiled from X 4.01 with XC 0.29b. Distributed under GNU LGPL. For copyrights, license, documentation and more visit Cross-Browser.com */
var xOp7Up,xOp6Dn,xIE4Up,xIE4,xIE5,xNN4,xUA=navigator.userAgent.toLowerCase();

if(window.opera)
{
    var i=xUA.indexOf('opera');
    if(i!=-1)
    {
        var v=parseInt(xUA.charAt(i+6));xOp7Up=v>=7;xOp6Dn=v<7;
    }
}
else if(navigator.vendor!='KDE' && document.all && xUA.indexOf('msie')!=-1)
{
    xIE4Up=parseFloat(navigator.appVersion)>=4;
    xIE4=xUA.indexOf('msie 4')!=-1;
    xIE5=xUA.indexOf('msie 5')!=-1;
}else if(document.layers)
{
    xNN4=true;
}

xMac=xUA.indexOf('mac')!=-1;

function xDef()
{
    for(var i=0; i<arguments.length; ++i)
    {
        if(typeof(arguments[i])=='undefined')
        {
            return false;
        }
    }
    return true;
}
    
function xGetElementById(e)
{
    if(typeof(e)=='string') 
    {
        if(document.getElementById)
        {
            e=document.getElementById(e);
        }
        else if(document.all)
        {
            e=document.all[e];
        }
        else
        {
            e=null;
        }
    }
    return e;
}

function xLeft(e, iX)
{
    if(!(e=xGetElementById(e))) 
    {
        return 0;
    }
    var css=xDef(e.style);
    
    if (css && xStr(e.style.left)) 
    {
        if(xNum(iX))
        {
             e.style.left=iX+'px';
        }
        else 
        {
            iX=parseInt(e.style.left);
            if(isNaN(iX))
            {
                iX=0;
            }
        }
    }
    else if(css && xDef(e.style.pixelLeft)) 
    {
        if(xNum(iX))
        {
            e.style.pixelLeft=iX;
        }
        else 
        {
            iX=e.style.pixelLeft;
        }
    }
    return iX;
}

function xMoveTo(e,x,y)
{
    xLeft(e,x);
    xTop(e,y);
}

function xNum()
{
    for(var i=0; i<arguments.length; ++i)
    {
        if(isNaN(arguments[i]) || typeof(arguments[i])!='number')
        { 
            return false;
        }
    }
    return true;
}

function xScrollTop(e, bWin)
{
    var offset=0;
    if (!xDef(e) || bWin || e == document || e.tagName.toLowerCase() == 'html' || e.tagName.toLowerCase() == 'body') 
    {
        var w = window;
        if (bWin && e)
        {
            w = e;
        }
        
        if(w.document.documentElement && w.document.documentElement.scrollTop)
        { 
            offset=w.document.documentElement.scrollTop;
        }
        else if(w.document.body && xDef(w.document.body.scrollTop)) 
        {
            offset=w.document.body.scrollTop;
        }
    }
    else 
    {
        e = xGetElementById(e);
        if (e && xNum(e.scrollTop)) 
        {
            offset = e.scrollTop;
        }
    }
    return offset;
}

function xStr(s)
{
    for(var i=0; i<arguments.length; ++i)
    {
        if(typeof(arguments[i])!='string')
        {
             return false;
        }
    }
    return true;
}

function xTop(e, iY)
{
    if(!(e=xGetElementById(e))) 
    {
        return 0;
    }
    var css=xDef(e.style);
    if(css && xStr(e.style.top)) 
    {
        if(xNum(iY)) 
        {
            e.style.top=iY+'px';
        }
        else 
        {
            iY=parseInt(e.style.top);
            if(isNaN(iY))
            {
                iY=0;
            }
        }
    }
    else if(css && xDef(e.style.pixelTop)) 
    {
        if(xNum(iY))
        {
            e.style.pixelTop=iY;
        }
        else
        { 
            iY=e.style.pixelTop;
        }
    }
    return iY;
}