/* Copyright (c) 2006 Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 * Thanks to: http://adomas.org/javascript-mouse-wheel/ for some pointers.
 * Thanks to: Mathias Bank(http://www.mathias-bank.de) for a scope bug fix.
 *
 * $LastChangedDate: 2007-12-20 09:02:08 -0600 (Thu, 20 Dec 2007) $
 * $Rev: 4265 $
 *
 * Version: 3.0
 * 
 * Requires: $ 1.2.2+
 */


(function($){$.event.special.mousewheel={setup:function(){var handler=$.event.special.mousewheel.handler;if($.browser.mozilla){$(this).bind("mousemove.mousewheel",function(event){$.data(this,"mwcursorposdata",{pageX:event.pageX,pageY:event.pageY,clientX:event.clientX,clientY:event.clientY})})}if(this.addEventListener){this.addEventListener(($.browser.mozilla?"DOMMouseScroll":"mousewheel"),handler,false)}else{this.onmousewheel=handler}},teardown:function(){var handler=$.event.special.mousewheel.handler;$(this).unbind("mousemove.mousewheel");if(this.removeEventListener){this.removeEventListener(($.browser.mozilla?"DOMMouseScroll":"mousewheel"),handler,false)}else{this.onmousewheel=function(){}}$.removeData(this,"mwcursorposdata")},handler:function(event){var args=Array.prototype.slice.call(arguments,1);event=$.event.fix(event||window.event);$.extend(event,$.data(this,"mwcursorposdata")||{});var delta=0,returnValue=true;if(event.wheelDelta){delta=event.wheelDelta/120}if(event.detail){delta=-event.detail/3}event.data=event.data||{};event.type="mousewheel";args.unshift(delta);args.unshift(event);return $.event.handle.apply(this,args)}};$.fn.extend({mousewheel:function(fn){return fn?this.bind("mousewheel",fn):this.trigger("mousewheel")},unmousewheel:function(fn){return this.unbind("mousewheel",fn)}})})(jQuery);