Port code from Google Fast Button article into jQuery special event

jquery.fastclick.js

@@ -0,0 +1,78 @@
+/*!
+ * jQuery fastclick Plugin
+ * http://www.zurb.com/playground/
+ * Ported from Ryan Fioravanti's fast button article
+ * http://code.google.com/mobile/articles/fast_buttons.html
+ *
+ * Copyright 2011, ZURB
+ * Released under the MIT License
+ */
+(function ($) {
+
+  $.event.special.fastclick = {
+
+		add: function (handleObj) {
+		  var $this = $(this),
+          startX,
+          startY,
+          coordinates = [];
+
+		  function onTouchStart(event) {
+        event.stopPropagation();
+
+        $(this).bind('touchend', onClick);
+        $('body').bind('touchmove', onTouchMove);
+
+        startX = event.originalEvent.touches[0].clientX;
+        startY = event.originalEvent.touches[0].clientY;
+      }
+
+      function pop() {
+        coordinates.splice(0, 2);
+      }
+
+      function preventGhostClick(x, y) {
+        coordinates.push(x, y);
+        window.setTimeout(pop, 2500);
+      }
+
+      function onClick(event) {
+        event.stopPropagation();
+        reset();
+        handleObj.handler.apply(this, arguments);
+
+        if (event.originalEvent.type == 'touchend') {
+          preventGhostClick(startX, startY);
+        }
+      }
+
+      function onTouchMove(event) {
+        if (Math.abs(event.originalEvent.touches[0].clientX - startX) > 10 ||
+            Math.abs(event.originalEvent.touches[0].clientY - startY) > 10) {
+          reset();
+        }
+      }
+
+      function reset() {
+        $this.unbind('touchend');
+        $('body').unbind('touchmove');
+      }
+
+      function clickBusterOnClick(event) {
+        for (var i = 0; i < coordinates.length; i += 2) {
+          var x = coordinates[i];
+          var y = coordinates[i + 1];
+          if (Math.abs(event.originalEvent.clientX - x) < 25 && Math.abs(event.originalEvent.clientY - y) < 25) {
+            event.stopPropagation();
+            event.preventDefault();
+          }
+        }
+      }
+
+		  $this.bind('touchstart', onTouchStart);
+      $this.bind('click', onClick);
+		  $(document).bind('click', clickBusterOnClick);
+		}
+	};
+
+}(jQuery));