表单验证提交的问题

Question

//定义全局变量,标记页面是否通过验证
var isValid=true;
function ckpass(){
   if(document.getElementById("password").value.length <6 || document.getElementById("password").value.length>12){ 
      document.getElementById("pass1").innerHTML="<img src='images/warn.gif' align='absmiddle'><font size='2' color='#ff0000'>密码必须在6-12个字符之间</font>"; 
      isValid=false;
   }else{
      document.getElementById("pass1").innerHTML="<img src='images/ok.gif' align='absmiddle'><font size='2' color='#999999'>密码可以使用 </font>";
      isValid=true;
   }
}function ckpassyz(){
   if(document.getElementById("yzpass").value.length <6 || document.getElementById("yzpass").value.length>12){ 
      document.getElementById("pass2").innerHTML="<img src='images/warn.gif' align='absmiddle'> <font size='2' color='#ff0000'> 密码必须在6-12个字符之间 </font>";
      isValid=false;
   }else if(document.getElementById("yzpass").value != document.getElementById("password").value){ 
      document.getElementById("pass2").innerHTML="<img src='images/warn.gif' align='absmiddle'> <font size='2' color='#ff0000'> 密码错误 </font>";
      isValid=false;
   }else{
      document.getElementById("pass2").innerHTML="<img src='images/ok.gif' align='absmiddle'> <font size='2' color='#999999'> 密码正确 </font>";
      isValid=true;
   }
}
        
function readySubmit(){
   if(!isValid) return false;
   return true;
}
             <form id="form2" name="form1" method="post" action=""> 
                <table>
                    <tr>
                        <td>登录密码：</td>
                        <td>
                            <input name="password" type="password" maxlength="12" id="password" onchange="javascript:ckpass();" />
                            <span id="pass1"></span>
                        </td>
                    </tr>
                    <tr>
                        <td>再次输入密码：</td>
                        <td>
                            <input name="yzpass" type="password" id="yzpass" maxlength="12" onblur="javascript:ckpassyz();" /> 
                            <span id="pass2"></span>
                        </td>
                    </tr>
                    <tr>
                        <td colspan="2"><input type="submit" name="Submit" value="提交" onclick="return readySubmit()" /></td>
                    </tr>
                </table>
            </form>
我火地说一句，楼主你那个代码的那个乱啊！！！！