// JavaScript Document

<!--script per a mostrar les diferents capes a traves del menú-->
<script language="javascript">
function mostra_capa(capa){
	var num_capes = 2;
	var i = 1;
	for (i=1;i<=num_capes;i++){
		document.getElementById('cos'+i).style.display='none';
	}
	document.getElementById(capa).style.display='block';
}
</script>