use javascript context

mailChecker = {
	address: 'valentin@shergin.com',
	constructor: function() {
		this.checkMail();
		
		// method 1: use closure
		var context = this;
		function check() { context.checkMail(); }
		// end of method 1
		
		// method 2: use Function object
		function check() { check.context.checkMail(); }
		check.context = this;
		// end of method 2
		
		this.interval = setInterval(check, 1000 * 60 * 5);
	},
	
	checkMail: function() {
		// use property 'this.address'
	}
}