login with refer

@@ -119,7 +119,7 @@ function rePosFooter() {
 
 
         //未登录
         //未登录
         $op.prepend(
         $op.prepend(
-            '<a href="/signin.html">登录</a>' +
+            '<a href="/signin.html?refer=' + location.href + '">登录</a>' +
             '<span class="sep-line">|</span>' +
             '<span class="sep-line">|</span>' +
             '<a href="/reg.html">注册</a>'
             '<a href="/reg.html">注册</a>'
         );
         );