JQuery兑现脚印高亮

<link rel="stylesheet" type="text/css" href="style.css">
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="util.js"></script>
<script type="text/javascript" src="base.js"></script>
<script type="text/javascript">
  $(document).ready(function() {
    $(".l").click(function() {
      $.cookie(this.href, 1, {expires: 4});
      highlight();
    });        
    highlight();
  })
</script>

<table width=960px align=center style="table-layout:fixed">
  <tr>
    <td>
      <a href="javascript:clear();" target=_self>清除历史</a>
    </td>
  </tr>
</table>
<table width=960px align=center style="table-layout:fixed">
  <tr>
    <td width=140px valign="top" align="center">
      <table id="table" class="box" width="100%" cellspacing=0>
        <tr><td align="center" class="header">实用工具</td></tr>
        <tr><td align="center"><a class="l" href="http://www.nmc.gov.cn/weather.html">天气预报</a></td></tr>
        <tr><td align="center"><a class="l" href="http://www.elong.com/flights/">航班查询</a></td></tr>
        <tr><td align="center"><a class="l" href="http://www.chinamobile.com/">中国移动</a></td></tr>
        <tr><td align="center"><a class="l" href="http://www.zset.gov.cn/reference/time.htm">世界时差</a></td></tr>
        <tr><td align="center"><a class="l" href="http://www.ip138.com/">IP地址查询</a></td></tr>
      </table>
      <table id="table" class="box" width="100%" cellspacing=0>
        <tr><td align="center" class="header">热门软件</td></tr>
        <tr><td align="center"><a class="l" href="http://www.360.cn/">360安全卫士</a></td></tr>
        <tr><td align="center"><a class="l" href="http://ttplayer.qianqian.com/index.html">千千静听</a></td></tr>
        <tr><td align="center"><a class="l" href="http://www.winrar.com.cn/download.htm">WinRAR</a></td></tr>
      </table>
    </td>
  </tr>
</table>

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JS代码：

function highlight() {
    var keys = $.cookie.keys();

    for(var i = 0; i < keys.length; i++) {
        if($.cookie(keys[i]) == 1) {
            $("a[href=" + keys[i] + "]").css({background:"#ffff66"});
        }
    }
}

function clear() {
    var keys = $.cookie.keys();

    for(var i = 0; i < keys.length; i++) {
        $.cookie(keys[i], 0, {expires: 0});
        window.location.href = window.location.href;
    }
}

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效果图：

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