guang home switch

@@ -65,8 +65,6 @@ $nav.delegate('.guang-nav-item', 'tap', function() {
         return;
     }
 
-    $curNav = $this;
-    curType = $this.data('type');
 
     index = $this.index();
 
@@ -78,7 +76,13 @@ $nav.delegate('.guang-nav-item', 'tap', function() {
     $content = $infos.eq(index);
     $content.removeClass('hide');
 
-    loadMore($content, state[curType]);
+    $curNav = $this;
+    curType = $this.data('type');
+
+    //当未加载数据时去请求数据
+    if (state[curType].page === 0) {
+        loadMore($content, state[curType]);
+    }
 
     //重置当前Tab的load-more
     if (state[curType].end) {