//----------------------------------------------------------------------------------------
// Varibles globales & inicialización ...
//----------------------------------------------------------------------------------------

var inicializado = 0;
var divs = new Array();

function inicializar()
{
	if(navigator.appName == "Netscape") {
		divs[0] = document.layers.descBienvenida;
		divs[1] = document.layers.descCategorias;
		divs[2] = document.layers.descCDs;
		divs[3] = document.layers.descLibros;
		divs[4] = document.layers.descPreferidas;
		divs[5] = document.layers.descRecursos;
		divs[6] = document.layers.descDLib;
		divs[7] = document.layers.descEbsco;
		divs[8] = document.layers.descLaLey;
		divs[9] = document.layers.descTgame;
		divs[10] = document.layers.descTgameL3;
	}
	else {
		divs[0] = document.all.descBienvenida.style;
		divs[1] = document.all.descCategorias.style;
		divs[2] = document.all.descCDs.style;
		divs[3] = document.all.descLibros.style;
		divs[4] = document.all.descPreferidas.style;
		divs[5] = document.all.descRecursos.style;
		divs[6] = document.all.descDLib.style;
		divs[7] = document.all.descEbsco.style;
		divs[8] = document.all.descLaLey.style;
		divs[9] = document.all.descTgame.style;
		divs[10] = document.all.descTgameL3.style;
	}

	inicializado = 1;
}

//----------------------------------------------------------------------------------------
// Funciones de Leo para cambiar el relieve en onMouseOver y onMouseOut ...
//----------------------------------------------------------------------------------------

function Sobre(item)
{
	item.style.border="1 inset #ffffff";
}

function yanoSobre(item)
{
	item.style.border="0 inset #ffffff";
}

//----------------------------------------------------------------------------------------
// Funciones para mostar / esconder layers
//----------------------------------------------------------------------------------------

function mostrarLayer(numLayer)
{
	if (inicializado) {
		divs[0].visibility = 'hidden';
		divs[numLayer].visibility = 'visible';
	}
}

function esconderLayer(numLayer)
{
	if (inicializado) {
		divs[numLayer].visibility = 'hidden';
		divs[0].visibility = 'visible';
	}
}