function commentAdd(){if($('nick').value.trim()==''){alert('请输入您的昵称！');return false;}if($('content').value.trim()==''){alert('评论不能为空！');return false;}if($('verifycode').value.trim()==''){alert('请输入验证码！');return false;}$('submit').disabled=true;var time=new Date();var time1=time.getTime()+Math.floor(Math.random()*(99999999));var article_id=$('article_id').value;var content=$('content').value;var nick=$('nick').value;var verifycode=$('verifycode').value;var URL='./comment_ajax.php';var pars='action=add&article_id='+article_id+'&content='+encodeURIComponent(content)+'&nick='+nick+'&verifycode='+verifycode+'&time='+time1;var myAjax=new Ajax.Request(URL,{method:'get',parameters:pars,onComplete:showResponse});}function showResponse(Ajax){if(Ajax.responseText!='fail'&&Ajax.responseText!='verifycode_error'){alert('评论成功～');var json=Ajax.responseText;json=eval("("+json+")");var comment_info='<div class="pre_comment">'+'<li id="cmt_title"><span style="color:#43609C;font-weight:bold;">'+$('nick').value+'</span> '+json['date']+'  &nbsp;&nbsp;'+json['address']+'</li>'+'<li id="cmt_content">'+replace_html($('content').value)+'</li>'+'</div>';div=document.createElement("div");div.id='comment_'+json['last_id'];$('main_comment').insertBefore(div,$('main_comment').childNodes[0]);$('comment_'+json['last_id']).innerHTML=comment_info;$('content').value='';$('submit').disabled=false;$('words_num').innerHTML='250';$('ver_img').src=$('ver_img').src+'?';}else if(Ajax.responseText!='fail'){alert('验证码错误，请重新输入！');$('submit').disabled=false;}else{alert('评论失败，请稍候重试... ...');$('submit').disabled=false;}}function replace_html(str){str=str.replace(/[&]/g,'&amp;');str=str.replace(/[<]/g,'&lt;');str=str.replace(/[>]/g,'&gt;');str=str.replace(/'"'/g,'&quot;');return str;}