function show_submenu(menu,show,id)
{
	//document.getElementById("footer").innerHTML = menu;
	//alert("woei");
	if(menu == 'menu')
	{
		sub_id = "submenu_" + id;
		if(show)
		{
			document.getElementById(id).style.backgroundImage = 'url(img/menu_hover_spacer.png)';
			document.getElementById(sub_id).style.display = 'block';
		}
		else
		{
			document.getElementById(id).style.backgroundImage = 'none';
			document.getElementById(sub_id).style.display = 'none';
		}
	}
	else
	{
		var hoofdmenu_parts = id.split("_");
		var hoofdmenu = hoofdmenu_parts[1];
		var hover = "../images/menu_hover_spacer.png";
		if(show)
		{
			document.getElementById(hoofdmenu).style.backgroundImage = 'url(img/menu_hover_spacer.png)';
			document.getElementById(id).style.display = 'block';
		}
		else
		{
			document.getElementById(hoofdmenu).style.backgroundImage = 'none';
			document.getElementById(id).style.display = 'none';
		}
	}
}