(function($){var allowed={};$.each(['click','dblclick','mousedown','mouseup','mousemove','mouseover','mouseout','keydown','keypress','keyup'],function(i,eventName){allowed[eventName]=true;});$.fn.extend({delegate:function(event,selector,f){return $(this).each(function(){if(allowed[event])
$(this).bind(event,function(e){var el=$(e.target),result=false;while(!$(el).is('body')){if($(el).is(selector)){result=f.apply($(el)[0],[e]);if(result===false)
e.preventDefault();return;}
el=$(el).parent();}});});},undelegate:function(event){return $(this).each(function(){$(this).unbind(event);});}});})(jQuery);