var NN 	= document.layers;
var IE 	= document.all;


var userAgent = window.navigator.userAgent;
var bVers = parseInt(userAgent.charAt(userAgent.indexOf("/")+1),10);


//--BEGIN Netscape layer functionality  --//
function findElement(n,ly) {
	var curDoc = ly ? ly.document : document;
	var elem = curDoc[n];
	if (bVers < 4)
		return document[n];
	if (!elem)
		{
		for (var i=0;i<curDoc.layers.length;i++)
			{
			elem = findElement(n,curDoc.layers[i]);
			if (elem)
				return elem;
			}
		}
	return elem;
	}
//--END Netscape layer functionality  --//

//--BEGIN Netscape layer access  --//
function NSStyle(s) {
	return findElement(s,0);
}
//--END Netscape layer access  --//


//--BEGIN Internet Explorer layer access  --//
function IEStyle(s)
	{
	return document.all.tags("div")[s].style;
	}
//--END Internet Explorer layer access  --//

//--BEGIN visibility switch for layers  --//
function Mostrar(aLayer,aBool) {
		if (document.all) {
			IEStyle(aLayer).visibility = (aBool == 0) ? "hidden" : "visible";
		}
		else {
			if (bVers < 5) {
				NSStyle(aLayer).visibility = (aBool == 0) ? 'hide' : 'show';
			}
			else {
				document.getElementById(aLayer).style.visibility= (aBool == 0) ? "hidden" : "visible";
			}
		}
}
//--END visibility switch for layers  --//

function CambioZindex(NombreCapa1, NIndex, NombreCapa2)
{
		if(document.layers)
		{
			if(NombreCapa2)
			{
				document.layers[NombreCapa1].document.layers[NombreCapa2].zIndex=NIndex;
			}
			else
			{
				document.layers[NombreCapa1].zIndex=NIndex;
			}
		}
		if(document.getElementById)	{document.getElementById(NombreCapa1).style.zIndex=NIndex;}
		if(document.all)						{document.all[NombreCapa1].style.zIndex=NIndex;}
		return;
}