点击才出现验证码

% if request("cur_action")="add" then code=Request.Form("code") if code=empty then response.write "script LANGUAGE='javascript'alert('请输入验证码！');history.go(-1);/script" Session("GetCode")=empty response.End() elseif lcase(code)lcase(Session("GetCode")) then response.write "script LANGUAGE='javascript'alert('您输入验证码出错！');history.go(-1);/script" Session("GetCode")=empty response.End() Else Response.Write "scriptalert('登陆成功');history.back();/script" response.End() end if end if % form name="form" method="post" action="index.asp" SCRIPT LANGUAGE=javascript /*显示认证码 o start1*/ function get_Code() { var Dv_CodeFile = "Dv_GetCode.asp"; if(document.getElementById("imgid")) document.getElementById("imgid").innerHTML = 'img src="'+Dv_CodeFile+'？t='+Math.random()+'" alt="点击刷新验证码" onclick="this.src=''+Dv_CodeFile+'？t='+Math.random()" /' } /*o end*/ /script script language="JavaScript" type="text/javascript" var dvajax_request_type = "GET"; /script script language="JavaScript" src="dv_ajax.js" type="text/javascript"/script tr td验证码：/td td!--验证码表单-- p input type="text" name="code" size="4" maxlength="4" tabindex="6" onfocus="get_Code();this.onfocus=null;" onkeyup="dv_ajaxcheck('checke_dvcode','code');" / span点击获取验证码/spanspan/span/pinput name="cur_action" type="hidden" value="add"input name="提交" type="submit"/td /tr /form

提示：您可以先修改部分代码再运行，复制代码和保存代码功能在Firefox下无效。