//hight light the menu left
Event.observe(window, 'load',
  function() { 
	$A(document.getElementsByClassName('link_menu_left')).each(function(el) 
		{
			if(window.location.href.indexOf(el.href) === 0)
			{
				el.up(0).className = "on";
			}
		});
	

 }
);