Element.addMethods({
				ajaxUpdate: function(element, url, options){
					var aj = new Ajax.Updater( element, url, options);
				}
		}); 
		
	function showSimilarWorkOffers(cat_id, page, actual_id) {
		var el = $('similar-work-offers');
		if (el) {
			el.ajaxUpdate('getSimilarWorkOffers.php', {parameters: {cat_id: cat_id, page: page, actual_id: actual_id}});
		}
		
		return false;
	}