/* 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;
}