function menu(id)
{
	var i = 1;
	var menus = ["men1","men2","men3","men4"];
	var submenus = ["sub1","sub2","sub3","sub4"];
	for(i=1; i<5; i++)
	{
	if( id==i )
		{		
		$("menu"+i).show();
		//$("head"+i).addClassName("no_image");
		document.getElementById("head"+i).className = 'no_image';
		}
	else
		{
		$("menu"+i).hide();		
		//$("head"+i).removeClassName("image");
		document.getElementById("head"+i).className = 'image';
		}
	}
}
function submenu(id)
{
	$("head"+i).addClassName("min_height");
}