function top_so(){
    var wwwurl = 'http://www.cncn.com';
    document.write('<div class="fst"></div><div class="txt"><ul><form action="'+wwwurl+'/xianlu/so.php" onsubmit="return chk_so(\'soform\')" id="soform" name="soform" target="_self"><li class="pd_2"><select id="tn" name="tn" selected="selected" class="select"><option value="line">线路</option><option value="jd">景点</option><option value="lxs">旅行社</option><option value="hotel">酒店</option><option value="all">所有</option></select></li><li class="pd_2"><input type="text" name="q" id="q" value="请输入需要查找的内容" onKeyPress="chk(q)" onpaste="chk(q)" onClick="chk(q)" class="s1" /><li><input type="submit" class="s2" value="搜索"/></li><li class="keywords"><span><a href="http://jipiao.cncn.com">特价机票</a></span><a href="'+wwwurl+'/xianlu/advanced_search.php" target="_blank">高级搜索>></a></li></form></ul></div><div class="lst"></div>');
}
top_so();