function auto_complete(_ou){
	if($(_ou) &&  typeof(_autocomplete_url)!=undefined ){
	    new Ajax.Autocompleter(_ou, _ou+'_ac', 
	    		_autocomplete_url, 
	        {
		    method: 'get'
	        } 
	    );
	}
}
Event.observe(window, "load", function(){auto_complete('search')});
Event.observe(window, "load", function(){auto_complete('search_bas')});