// JavaScript Document
function showMenu (menu_name) {

	hideAll ();
	document.getElementById(menu_name).style.visibility = "visible";

	}

function hideMenu (menu_name) {

	document.getElementById(menu_name).style.visibility = "hidden";

	}

function hideAll () {
	
	hideMenu ('ourmarketsmenu');
	hideMenu ('ourserviceprovidersmenu');
	hideMenu ('whowearemenu');
	hideMenu ('whatwedomenu');
	}