// JavaScript Document
function showLayer(showlayer1,showlayer2,nivel){
	hideLayers(nivel);

	if (document.getElementById) { // DOM3 = IE5, NS6

			document.getElementById(showlayer1).style.visibility = 'visible';
			document.getElementById(showlayer2).style.visibility = 'visible';
		
	}
	else {
		if (document.layers) { // Netscape 4
			document.showlayer1.display = '';
			document.showlayer2.display = '';
			
		}
		else { // IE 4
		    document.all.showlayer1.style.display = '';
			document.all.showlayer2.style.display = '';
			
		}
	}

	
}