First

<script type="text/javascript" src="%%GLOBAL_ShopPath%%/javascript/formfield.js?%%GLOBAL_JSCacheToken%%"></script>
<script type="text/javascript" src="%%GLOBAL_ShopPath%%/javascript/validate.js?%%GLOBAL_JSCacheToken%%"></script>
<script type="text/javascript"><!--

    /* Make sure all new account details are filled in */
    function check_create_account_form() {

        var formIdx = [%%GLOBAL_CreateAccountAccountFormFieldID%%, %%GLOBAL_CreateAccountShippingFormFieldID%%];
        var emailField, passwordField, confirmField, formfields;

        for (var i=0; i<formIdx.length; i++) {
            formfields = FormField.GetValues(formIdx[i]);

            for (var j=0; j<formfields.length; j++) {
                var rtn = FormField.Validate(formfields[j].field);

                if (!rtn.status) {
                    alert(rtn.msg);
                    FormField.Focus(formfields[j].field);
                    return false;
                }

                if (formIdx[i] == %%GLOBAL_CreateAccountAccountFormFieldID%%) {
                    if (formfields[j].privateId == 'EmailAddress') {
                        emailField = formfields[j];
                    } else if (formfields[j].privateId == 'Password') {
                        passwordField = formfields[j];
                    } else if (formfields[j].privateId == 'ConfirmPassword') {
                        confirmField = formfields[j];
                    }
                }
            }
        }

        if (!isValidEmailAddress(emailField.value)) {
            alert("%%LNG_AccountEnterValidEmail%%");
            FormField.Focus(emailField.field);
            return false;
        }

        if(passwordField.value == "") {
            alert("%%LNG_AccountEnterPassword%%");
            FormField.Focus(passwordField.field);
            FormField.Focus(passwordField.field);
            return false;
        }

        if((passwordField.value != "" || confirmField.value != "") && (passwordField.value != confirmField.value)) {
            alert("%%LNG_AccountPasswordsDontMatch%%");
            FormField.Focus(confirmField.field);
            return false;
        }

        return true;
    }

    %%GLOBAL_FormFieldRequiredJS%%
//-->
</script>
​