Inserting a general validation alert using KnockoutJS validation - validation

Question

I'd looking for the most effective way of inserting a general validation alert "Please check your submission" to be positioned above the fieldset, instead of in an alert pop-up as coded below.
http://jsfiddle.net/Nz38D/3/
HTML:
<script id="customMessageTemplate" type="text/html">
<em class="customMessage" data-bind='validationMessage: field'></em>
</script>
<fieldset>
<legend>Details</legend>
<label>First name:
<input data-bind='value: firstName' />
</label>
<label>Last name:
<input data-bind='value: lastName' />
</label>
<div data-bind='validationOptions: { messageTemplate: "customMessageTemplate" }'>
<label>Email:
<input data-bind='value: emailAddress' required pattern="#" />
</label>
</fieldset>
<br>
<button type="button" data-bind='click: submit'>Submit</button>
<br>
<br> <span data-bind='text: errors().length'></span> errors
JS:
ko.validation.rules.pattern.message = 'Invalid.';
ko.validation.configure({
decorateElement: true,
registerExtenders: true,
messagesOnModified: true,
insertMessages: true,
parseInputAttributes: true,
messageTemplate: null
});
var viewModel = function() {
this.firstName = ko.observable().extend({
minLength: 2,
maxLength: 10
});
this.lastName = ko.observable().extend({
required: true
});
this.emailAddress = ko.observable().extend({ // custom message
required: {
message: 'Enter your email address.'
}
});
this.submit = function () {
if (this.errors().length == 0) {
alert('Thank you.');
} else {
alert('Please check your submission.');
this.errors.showAllMessages();
}
};
this.errors = ko.validation.group(this);
};
ko.applyBindings(new viewModel());

Answer 1

I inserted a virtual element to hold the validation summary message and bound its display to an observable in the click function: http://jsfiddle.net/sx42q/2/
HTML:
<!-- ko if: displayAlert -->
<p class="customMessage" data-bind="text: validationSummary"></p> <br />
<!-- /ko -->
JS:
this.validationSummary = ko.observable("Complete missing fields below:");
this.displayAlert = ko.observable(false);
this.submit = function () {
if (this.errors().length == 0) {
alert('Thank you.');
} else {
this.displayAlert(true);
this.errors.showAllMessages();
}