radial button polymer javascipt.js

<script>
(function () { // IIFE makes attributes global 
	/* -- Global Attributes ------------------------------------------------ */
	var currentAccent = 'en-US';
	var accentArr	  =  ['en-US', 'en-GB', 'es-ES'];
 	Polymer('x-radial-buttons', {
		/* -- Methods --------------------------------------------------- */
		getCurrentAccent: function () {
    			return currentAccent;
		},
		/* Easily grab different elements from the Shadow DOM, and expose them to other .js files.
		 * ex:  document.querySelector("x-radial-buttons").getFirstElement();
		 */
		getFirstElement: function () {
			return this.$.paper_radio_group.querySelector("#paper_radio_btn_en-US");
		},
		getSecondElement: function () {
			return this.$.paper_radio_group.querySelector("#paper_radio_btn_en-GB");
		},
		getThirdElement: function () {
			return this.$.paper_radio_group.querySelector("#paper_radio_btn_es-ES");
		},
		changeAccentUS: function(event, detail, sender) {
			var accent    = accentArr[0];
			pokemonApp.changeAccent(accent);
		},
		changeAccentGB: function() {
			var accent    = accentArr[1];
    			pokemonApp.changeAccent(accent);
		},
		changeAccentES: function () {
			var accent    = accentArr[2];
			pokemonApp.changeAccent(accent);
		}
	});
 })();
</script>