// JavaScript Document function cksearch(){ form=document.form_headsearch; if(form.fid.value=='0'){ alert("请选择一个栏目!!"); return false; } if(form.keyword.value==''){ alert("关键字不能为空!!"); return false; } } document.writeln("

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出租房<\/a> 写字楼<\/a> 同城交友<\/a><\/div><\/form>");