update for fix pay bug in detail page

@@ -7,7 +7,7 @@
             {{# btns}}
                 <li>
                     {{#if isPayBtn}}
-                    <a href="{{payUrl}}">
+                    <a href="{{payUrl}}" target="_blank">
                         <span class="{{classStr}}">{{name}}</span>
                     </a>
                     {{^}}

@@ -10,6 +10,8 @@
         <span>尺码：
             <span class="bold">{{sizeName}}</span>
         </span>
+        {{#if buyNumber}}
         <p class="bold buy-number"><span class="iconfont">&#xe61d;</span>{{buyNumber}}</p>
+        {{/if}}
     </div>
 </div>

@@ -62,8 +62,6 @@ $('body').on('click', function(e) {
         return false;
     }
 
-    e.preventDefault();
-
     if (!$('.package-list').hasClass('hide')) {
         $('.package-list').addClass('hide');
     }