pos footer

@@ -7,8 +7,6 @@ var $ = require('jquery');
 
 var $footer = $('#yoho-footer');
 
-var FOOTERHEIGHT = 120; //footer height
-
 function cookie(name) {
     var cookies = document.cookie,
         cookieVal,
@@ -100,7 +98,7 @@ function rePosFooter() {
         return;
     }
 
-    if ($('body').height() < $(window).height() - FOOTERHEIGHT) {
+    if ($('body').height() <= $(window).height()) {
         $footer.addClass('bottom');
     } else {
         $footer.removeClass('bottom');
@@ -113,7 +111,7 @@ function rePosFooter() {
 
     var user = getUser();
 
-    if ($('body').height() < $(window).height() - FOOTERHEIGHT) {
+    if ($('body').height() <= $(window).height()) {
         $footer.addClass('bottom');
     }