Changed beforeShow & beforeHide back to $.noop and added an explicit …

…comparison to FALSE.

src/easyzoom.js

@@ -19,10 +19,10 @@
         preventClicks: true,
 
         // Callback function to execute before the flyout is displayed.
-        beforeShow: null,
+        beforeShow: $.noop,
 
         // Callback function to execute before the flyout is removed.
-        beforeHide: null,
+        beforeHide: $.noop,
 
         // Callback function to execute when the flyout is displayed.
         onShow: $.noop,
@@ -79,7 +79,7 @@
         var w1, h1, w2, h2;
         var self = this;
 
-        if (this.opts.beforeShow && !this.opts.beforeShow.call(this)) return;
+        if (this.opts.beforeShow.call(this) === false) return;
 
         if (!this.isReady) {
             return this._loadImage(this.$link.attr('href'), function() {
@@ -246,7 +246,7 @@
      */
     EasyZoom.prototype.hide = function() {
         if (!this.isOpen) return;
-        if (this.opts.beforeHide && !this.opts.beforeHide.call(this)) return;
+        if (this.opts.beforeHide.call(this) === false) return;
 
         this.$flyout.detach();
         this.isOpen = false;