求助代码跳转

<script language="javascript" type="text/javascript">
function changeFocus()
    {
        if(event.srcElment.type!='button'&&
           event.srcElment.type!='submit'&&
           event.srcElment.type!='reset'&&
           event.srcElment.type!='textarea'&&
           event.srcElment.type!='')
           event.keyCode=9;
    }
    document.onKeyDown=changeFocus;
function userName()
    {
        var name=document.userform.sname.value;
        if(name.length<6||name.length>20)
            {
                alert("格式错误\n"+"请填写正确用户名");
            }
      
            return true;
    }
function Password()
    {
        var Word=document.userform.pass.value;
        if(Word.length<6||word.length>15)
            {
                alert("密码格式错误\n"+"6-15个字符");
            }
            return true;
      
    }
function Rpassword()
    {
        var Word=document.userform.pass.value;
        if(Word.length<6||word.length>15)
            {
                alert("密码必须相同");
            }
            return true;
      
    }
function checkEmail()
    {
        var remail=document.userform.email.value;
        if(remail.length==0)
            {
                alert("邮箱格式错误\n"+"请认真填写");
            }
        if(remail.indexof("@",0)==-1)
            {
                alert("邮箱地址必须包含'@'");
            }
        if(remail.indexof(".",0)==-1)
            {
                alert("邮箱必须包含'.'");
            }
        return true;
    }
function validateform()
    {
        if(userName()&&Password()&&Rpassword()&&checkEmail())
        return true;
        if(true)
            {
                window.open("Log.html");
            }
        else
        return false;
    }
    //
</script>