// JavaScript Document

function show( id ) {
	
	var i, name;
	
	for ( i = 1; i <= 3; i++ ) {
		
		name = "menu" + i;
		
		document.getElementById( name ).style.display = "none";
		
	}
	
	name = "menu" + id;
	
	document.getElementById( name ).style.display = "block";
	
}