optimise the scroll for recommend for you. cdoe reveiw by LZF

@@ -43,6 +43,8 @@ function request() {
             requesting = false;
             end = true;
 
+            window.rePosFooter();
+
         }).fail(function() {
             $recommendForYou.hide();
         });
@@ -50,7 +52,7 @@ function request() {
 }
 
 function scrollHandler() {
-    if (!end || $(window).scrollTop() + winH >= $(document).height() - 50) {
+    if (!end || $(window).scrollTop() + winH >= $(document).height() - 200) {
         request();
     }
 }