// document.write("Resolución de pantalla: ");
// document.write(screen.width + "*" + screen.height);
// document.write("<br>");
// document.write("Area visible disponible: ");
// document.write(screen.availWidth + "*" + screen.availHeight);
// document.write("<br>");
// document.write("Resolución de color: ");
// document.write(screen.colorDepth);
// document.write(" bits<br>");

function capaVisible(idCapa) {
	capa = eval('document.getElementById("' + idCapa + '").style');
	capa.visibility = "visible";
}

function capaOculta(idCapa) {
	capa = eval('document.getElementById("' + idCapa + '").style');
	capa.visibility = "hidden";
}

function getWidthScreen() {
	return screen.width;
}

function getHeightScreen() {
	return screen.height;
}

function configSubMenu(idCapa, posicionPadre) {
	var margenIzquierdo = (getWidthScreen() - 800) / 2;
 	capa = document.getElementById(idCapa);
	capa.style.visibility = 'hidden';
	capa.style.position = 'absolute';
	capa.style.width = '100px';
	capa.style.top = '110px';
	capa.style.left = margenIzquierdo + posicionPadre + 15;
}