how to handle HTML forms in my zimlets ?

[bizzare]

Hi ,
my zimlet have html form inside , and i create the html form by this way :

com_zimbra_mail_validator_HandlerObject.prototype._get_mail_validation_form = 
	function(){
		var html = '<form id="start" action="/" method="post">' + 
				'<h1>please enter user id </h1>' +
				'<p>' +
					'<input id="email" type="text" />' +
					'<label for="email">user id</label>' +  
				'</p>' +
				'<p>'+
				'<input type="submit" value="check"/>' + 
				'</p>'+
				'<div id="btn_cell"></div>'
			'</form>';
		return html;
	};

and i call this function in appLaunch prototype of my zimlet:

com_zimbra_mail_validator_HandlerObject.prototype.appLaunch = function (appName) {
	var app = appCtxt.getApp(appName);
	app.setContent(this._get_mail_validation_form());
};

it works fine , but i just know how i can handle the submit button with ajax in my zimlet or am i in right way for creating custom html form in zimbra web client ?