(function ($) { var mwheelI = { pos: [-260, -260] }, minDif = 3, doc = document, root = doc.documentElement, body = doc.body, longDelay, shortDelay; function unsetPos() { if (this === mwheelI.elem) { mwheelI.pos = [-260, -260]; mwheelI.elem = false; minDif = 3 } } $.event.special.mwheelIntent = { setup: function () { var jElm = $(this).bind("mousewheel", $.event.special.mwheelIntent.handler); if (this !== doc && this !== root && this !== body) { jElm.bind("mouseleave", unsetPos) } jElm = null; return true }, teardown: function () { $(this).unbind("mousewheel", $.event.special.mwheelIntent.handler).unbind("mouseleave", unsetPos); return true }, handler: function (e, d) { var pos = [e.clientX, e.clientY]; if (this === mwheelI.elem || Math.abs(mwheelI.pos[0] - pos[0]) > minDif || Math.abs(mwheelI.pos[1] - pos[1]) > minDif) { mwheelI.elem = this; mwheelI.pos = pos; minDif = 250; clearTimeout(shortDelay); shortDelay = setTimeout(function () { minDif = 10 }, 200); clearTimeout(longDelay); longDelay = setTimeout(function () { minDif = 3 }, 1500); e = $.extend({}, e, { type: "mwheelIntent" }); return $.event.handle.call(this, e, d) } } }; $.fn.extend({ mwheelIntent: function (fn) { return fn ? this.bind("mwheelIntent", fn) : this.trigger("mwheelIntent") }, unmwheelIntent: function (fn) { return this.unbind("mwheelIntent", fn) } }); $(function () { body = doc.body; if (!$.fn.mousewheel) { setTimeout(function () { throw ("Please include the mousewheel plugin before the mwheelIntent-plugin") }, 0) } $(doc).bind("mwheelIntent.mwheelIntentDefault", function () { }) }) })(jQuery);