document.write('<script language="javascript" id="src_field_list"></script>');document.write('<select id="search_channel_list" style="width:110px" onchange=\' SetSearchField("",this)\'>');document.write('<option value="0">请选择频道</option>');document.write('<option value="1">新闻中心</option>');document.write('<option value="21">政协大事记</option>');document.write('<option value="22">政协刊物</option>');document.write('</select>');document.write('<select id="search_field_list" style="width:110px"><option value="0">选择搜索字段</option></select>');document.write('<input type="text" maxlength="50" id="search_txt_keyword" />');document.write('<input type="button" value="搜索" onclick=\'GoSearch("")\'/>');