Revert "修复宽屏下footer没有固定在底部的Bug"

This reverts commit 8f52f66.

Author: alsotang

public/javascripts/main.js

@@ -1,21 +1,11 @@
 $(document).ready(function () {
-  var windowHeight = $(window).height();
   var $backtotop = $('#backtotop');
-  var top = windowHeight - $backtotop.height() - 200;
-
+  var top = $(window).height() - $backtotop.height() - 200;
 
   function moveBacktotop() {
     $backtotop.css({ top: top, right: 0});
   }
 
-  function footerFixBottom() {
-      if($(document.body).height() < windowHeight){
-          $("#footer").addClass('fix-bottom');
-      }else{
-          $("#footer").removeClass('fix-bottom');
-      }
-  }
-
   $backtotop.click(function () {
     $('html,body').animate({ scrollTop: 0 });
     return false;
@@ -30,9 +20,7 @@ $(document).ready(function () {
   });
 
   moveBacktotop();
-  footerFixBottom();
   $(window).resize(moveBacktotop);
-  $(window).resize(footerFixBottom);
 
   $('.topic_content a,.reply_content a').attr('target', '_blank');
 

public/stylesheets/style.less

@@ -98,11 +98,6 @@ body {
   clear: both;
   position: relative;
   background: white;
-  &.fix-bottom{
-      position: fixed;
-      bottom: 0;
-      width:100%;
-  }
 }
 
 #footer_main {