function makeHead(id)
{
head = '<div class="helpTop">';
head += '<div class="sinaHelp">';
head += '<div class="logo">';
head += '<a href="/" title="中国机床网 帮助中心"><img src="image/logo.gif" alt="中国机床网 帮助中心" /></a>';
head += '</div>';
head += '<div class="nv">';
head += '<a href="http://www.machine-information.com">中国机床网首页</a>';
head += '<a href="http://www.machine-information.com/member">会员中心</a>';
head += '<a href="http://www.machine-information.com/ask">问答</a>';
head += '</div>';
head += '<div class="roll">';
head += '<iframe frameborder="0" scrolling="no" allowtransparency="ture" src="image/roll.htm" width="760px" height="26px"></iframe>';
head += '</div>';
head += '</div>';
head += '</div>';
head += '<div class="helpBanner">';
head += '<div class="banner">';
head += '<ul>';

head += '<li ';
if(id == 0)head += 'class="on"';
head += '><a href="http://www.machine-information.com">网站首页</a></li>';

head += '<li ';
if(id == 1)head += 'class=\"on\"';
head += '><a href="about.html">关于我们</a></li>';

head += '<li ';
if(id == 2)head += 'class="on"';
head += '><a href="memberlevel.html">会员服务</a></li>';

head += '<li ';
if(id == 3)head += 'class="on"';
head += '><a href="adserver.html">广告服务</a></li>';

head += '<li ';
if(id == 4)head += 'class="on"';
head += '><a href="cooperation.html">网站合作</a></li>';

head += '<li ';
if(id == 5)head += 'class="on"';
head += '><a href="friendlinks.html">友情链接</a></li>';

head += '<li ';
if(id == 6)head += 'class="on"';
head += '><a href="serverlist.html">服务细则</a></li>';

head += '<li ';
if(id == 7)head += 'class="on"';
head += '><a href="contract.html">联系我们</a></li>';

head += '<li ';
if(id == 8)head += 'class=\"li_one on\"';
head += '><a href="law.html">法律声明</a></li>';

head += '</ul>';

head += '</div>';
head += '</div>';
document.writeln(head);
}