Basic jQuery function for handling enter key being hit.

jQuery onEnterKeypress

	/**
	 * Basic jQuery function for handling enter key being hit.
	 * 
	 * @returns jQuery
	 */
	$.fn.onEnterKeypress = function (callback) {
		return $(this).keypress(function (evt) {
			// Check for enter key
			if (evt.which === 13) {
				// Invoke callback
				callback.call(this, evt);
			}
		});
	};