keyboardSubmit = function(selector) {
			$(selector).keypress(function(e){
				var code = e.keyCode || e.which;
				if (code == 13) {
					e.preventDefault();
					$(this).click()
				}
			});
		}	
		addThisList = function(){			
			$('.addthis_list').addClass('invisible');
			$('.addthis_button').attr('tabindex','0').click(function(){							
				var list = $(this).siblings('.addthis_list');
				
				if(list.hasClass('show')) {
					$(this).siblings('.addthis_list').addClass('invisible').removeClass('show');
				} else {					
					$(this).siblings('.addthis_list').removeClass('invisible').addClass('show');
				}
			});
			
			$('.addthis_list a').click(function(){
				
				$(this).parent('.addthis_list').removeClass('show').addClass('invisible');
				return true;
			});
			keyboardSubmit('.addthis_button');
		}