document.write("<style type='text/css'>body,td,th {font-size: 12px;}</style><table width='270' border='0' cellspacing='0' cellpadding='0'><tr><form id='form1' name='form1' method='post' action='/login.aspx'>");
document.write("<td height='20' width='40%'>登陆名：<input name='txtUserName' type='text' maxlength='20' style='width: 60px;height:18px;border:1px solid #aaaaaa'></td>");
document.write("<td width='40%'>密&nbsp;&nbsp;码：<input name='txtPassword' type='Password' maxlength='20' style='width: 60px;height:18px;border:1px solid #aaaaaa'></td>");
document.write("<td width='20%'><select id='Select1' name='lstUserType' style='width: 50px;height:18px;border:1px solid #aaaaaa'><option selected='selected' value='2'>个人</option><option value='1'>企业</option><option value='3'>明星</option></select></td></tr>");
document.write("<tr><td height='20'>验证码：<input name='txtValidateKey' type='text' maxlength='4' style='width: 40px;height:18px;border:1px solid #aaaaaa'></td>");
document.write("<td><img src='/commn/validatekey.aspx' align='absmiddle'>&nbsp;<input name='LastUrl' value='' type='hidden'><input id='Submit1' type='submit' value='登 录' onClick='return ChkForm(this.form)' style='width: 60px;height:20px;border:1px solid #aaaaaa' /></td>");
document.write("<td>&nbsp; <a href=/commn/reg.asp>注册</a></td></tr></form></table>");

 
    function ChkForm(frm)
    {
       if(frm.txtUserName.value==""||frm.txtPassword.value=="")
       {
          alert("用户名和密码都不能为空！");
          return false;
       }
       
       var reg=/['<> \"]+/;
       if(reg.test(frm.txtUserName.value))
       {
          alert("用户名不能包含特殊字符！");
          return false;
       }
       
       if(reg.test(frm.txtPassword.value))
       {
          alert("用户密码不能包含特殊字符！");   
          return false;
       }
       

       reg=/^\d{4}$/;
       if(!reg.test(frm.txtValidateKey.value))
       {
          alert("验证码只能是数字,且是四位数！");
          return false;
       }
       
       return true;    
    }