Fix mouse event triggering on Firefox 2

src/utils.js

@@ -3,6 +3,7 @@ ko.utils = new (function () {
     var stringTrimRegex = /^(\s|\u00A0)+|(\s|\u00A0)+$/g;
     var isIe6 = /MSIE 6/i.test(navigator.userAgent);
     var isIe7 = /MSIE 7/i.test(navigator.userAgent);
+    var knownMouseEvents = { "click" : 1, "dblclick" : 1, "mousedown" : 1, "mouseup" : 1, "mousemove" : 1, "mouseover" : 1, "mouseout" : 1, "mouseenter" : 1, "mouseleave" : 1 };
 
     function isClickOnCheckableElement(element, eventType) {
         if ((element.tagName != "INPUT") || !element.type) return false;
@@ -204,7 +205,7 @@ ko.utils = new (function () {
                 jQuery(element)['trigger'](eventType, eventData);
             } else if (typeof document.createEvent == "function") {
                 if (typeof element.dispatchEvent == "function") {
-                    var eventCategory = (eventType == "click" ? "MouseEvents" : "HTMLEvents"); // Might need to account for other event names at some point
+                    var eventCategory = (eventType in knownMouseEvents ? "MouseEvents" : "HTMLEvents");
                     var event = document.createEvent(eventCategory);
                     event.initEvent(eventType, true, true, window, 0, 0, 0, 0, 0, false, false, false, false, 0, element);
                     element.dispatchEvent(event);