bugfix about addEventListener on IE7

the piece of code modified is:

            setOnPaste: function() {
                if (__p.hasOnSupport()) {
                    $el.on("paste", __p.onPasteMethod);
                } else {
                    $el = $el.get(0);
                    $el.addEventListener ? 
                        $el.addEventListener("paste", __p.onPasteMethod, false) :
                        $el.attachEvent("paste", __p.onPasteMethod);
                }
            },