/* 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;
}