(function () {
	'use strict';

	function foo () {
		return embiggen( 6, 7 );
	}

	/**
	 * Embiggens a number
	 * @param {number} num - the number to embiggen
	 * @param {number} factor - the factor to embiggen it by
	 * @returns {number}
	 */
	function embiggen ( num, factor ) {
		return num * factor;
	}

	alert( foo() );

}());