document.write("<style type='text/css'>body,td,th {font-size: 12px;}</style><table width='100%'   cellpadding='0'><form id='form1' name='form1' method='post' action='/login.aspx'>");
document.write("<tr><td width='50%' height='18' align='right''>登 录 名：</td>");
document.write("<td width='50%' height='18'><input name='txtUserName' type='text' maxlength='20' style='width: 60px;height:18px;border:1px solid #aaaaaa' /></td></tr>");
document.write("<tr><td width='50%' height='18' align='right'> 密&nbsp;&nbsp;&nbsp; 码：</td>");
document.write("<td width='50%' height='18'><input name='txtPassword' type='Password' maxlength='20' style='width: 60px;height:18px;border:1px solid #aaaaaa' /></td></tr>");
document.write("<tr><td width='50%' height='18' align='right' >验证码：</td>");
document.write("<td width='50%' height='18'><input name='txtValidateKey' type='text' maxlength='4' style='width: 30px;height:18px;border:1px solid #aaaaaa' />&nbsp;<img src='/commn/validatekey.aspx' align='absmiddle'></td></tr>");
document.write("<tr><td width='50%' height='18' align='right'><select  name='lstUserType' style='width:60px;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><td width='50%' height='23'>");
document.write("<input name='LastUrl' value='' type='hidden' /><input id='Submit1' type='submit' value='登 录' onClick='return ChkForm(this.form)' style='width: 50px;height:20px;border:1px solid #aaaaaa' />&nbsp;<a href=/commn/reg.asp>注册</a>");
document.write("</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;    
    }