// JavaScript Document

	function ocultar_capa()
		{
		try{
			if(document.getElementById('menu_1').style.visibility = "visible")
				document.getElementById('menu_1').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_2').style.visibility = "visible")
				document.getElementById('menu_2').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_3').style.visibility = "visible")
				document.getElementById('menu_3').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_4').style.visibility = "visible")
				document.getElementById('menu_4').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_5').style.visibility = "visible")
				document.getElementById('menu_5').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_6').style.visibility = "visible")
				document.getElementById('menu_6').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_7').style.visibility = "visible")
				document.getElementById('menu_7').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_8').style.visibility = "visible")
				document.getElementById('menu_8').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_9').style.visibility = "visible")
				document.getElementById('menu_9').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_10').style.visibility = "visible")
				document.getElementById('menu_10').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_11').style.visibility = "visible")
				document.getElementById('menu_11').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_12').style.visibility = "visible")
				document.getElementById('menu_12').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_13').style.visibility = "visible")
				document.getElementById('menu_13').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_14').style.visibility = "visible")
				document.getElementById('menu_14').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_15').style.visibility = "visible")
				document.getElementById('menu_15').style.visibility = "hidden";
		}
		catch(e){}
		try{
			if(document.getElementById('menu_16').style.visibility = "visible")
				document.getElementById('menu_16').style.visibility = "hidden";
		}
		catch(e){}
		}
	
	function mostrar_capa(id)
		{
			ocultar_capa();
			document.getElementById(id).style.visibility = "visible";
		}