diff --git a/trunk/module/common/footer.html.php b/trunk/module/common/footer.html.php
index 6319c8222d..bd9058920d 100644
--- a/trunk/module/common/footer.html.php
+++ b/trunk/module/common/footer.html.php
@@ -1,9 +1,5 @@
-<!--[if lte IE 6]><br /><![endif]-->
 <div class='yui-d0' id='hiddenbar'>
-  <iframe frameborder='0' name='hiddenwin' id='hiddenwin' 
-    class='<?php $config->debug ? print("debugwin") : print('hiddenwin')?>' 
-    src='<?php echo $this->createLink('index', 'ping');?>'>
-  </iframe>
+  <iframe frameborder='0' name='hiddenwin' id='hiddenwin' class='<?php $config->debug ? print("debugwin") : print('hiddenwin')?>'></iframe>
 </div>
 <div id='footer' class='yui-d0 yui-t7'>
   <div class='yui-g'>
diff --git a/trunk/module/user/view/login.html.php b/trunk/module/user/view/login.html.php
index 6189aca5c1..ba273f317c 100644
--- a/trunk/module/user/view/login.html.php
+++ b/trunk/module/user/view/login.html.php
@@ -34,11 +34,12 @@ $themeRoot   = $webRoot . "theme/";
   if(isset($header['desc']))    echo "<meta name='description' content='$header[desc]'>\n";
   ?>
 <?php echo js::exportConfigVars();?>
+<script language='Javascript'>var needPing=false</script>
 <script src="<?php echo $jsRoot;?>jquery/lib.js" type="text/javascript"></script>
 <script src="<?php echo $jsRoot;?>my.js"         type="text/javascript"></script>
 <link rel='stylesheet' href='<?php echo $clientTheme . 'yui.css';?>' type='text/css' media='screen' />
 <link rel='stylesheet' href='<?php echo $clientTheme . 'style.css';?>' type='text/css' media='screen' />
-<script type="text/javascript">loadFixedCSS();</script>
+<script language='Javascript'>loadFixedCSS();</script>
 <body onload="document.getElementById('account').focus();">
 <div class='yui-d0'>
   <form method='post' style='margin-top:100px'>
diff --git a/trunk/www/js/my.js b/trunk/www/js/my.js
index 30cbd9a2e7..8f3a802499 100644
--- a/trunk/www/js/my.js
+++ b/trunk/www/js/my.js
@@ -21,25 +21,31 @@ function createLink(moduleName, methodName, vars, viewType)
 {
     link = webRoot;
     if(!viewType) viewType = defaultView;
-    vars = vars.split('&');
-    for(i = 0; i < vars.length; i ++) vars[i] = vars[i].split('=');
+    if(vars)
+    {
+        vars = vars.split('&');
+        for(i = 0; i < vars.length; i ++) vars[i] = vars[i].split('=');
+    }
     if(requestType == 'PATH_INFO')
     {
         link += moduleName + requestFix + methodName;
-        if(pathType == "full")
+        if(vars)
         {
-            for(i = 0; i < vars.length; i ++) link += requestFix + vars[i][0] + requestFix + vars[i][1];
-        }
-        else
-        {
-            for(i = 0; i < vars.length; i ++) link += requestFix + vars[i][1];
+            if(pathType == "full")
+            {
+                for(i = 0; i < vars.length; i ++) link += requestFix + vars[i][0] + requestFix + vars[i][1];
+            }
+            else
+            {
+                for(i = 0; i < vars.length; i ++) link += requestFix + vars[i][1];
+            }
         }
         link += '.' + viewType;
     }
     else
     {
         link += '?' + moduleVar + '=' + moduleName + '&' + methodVar + '=' + methodName + '&' + viewVar + '=' + viewType;
-        for(i = 0; i < vars.length; i ++) link += '&' + vars[i][0] + '=' + vars[i][1];
+        if(vars) for(i = 0; i < vars.length; i ++) link += '&' + vars[i][0] + '=' + vars[i][1];
     }
     return link;
 }
@@ -92,9 +98,17 @@ function switchAccount(account)
     location.href=link;
 }
 
+function setPing()
+{
+    $('#hiddenwin').attr('src', createLink('index', 'ping'));
+}
+
+/* 需要不需要ping，已保证session不过期。 */
+needPing = true;
 
 /* 自动执行的代码。*/
 $(document).ready(function() 
 {
     setNowrapObjTitle();
+    if(needPing) setTimeout('setPing()', 1000 * 60 * 5);  // 5分钟之后开始ping。
 });
