$(document).ready(function() {
	document.onkeydown = checkKeycode
		function checkKeycode(e) {
		var keycode;
		if (window.event) keycode = window.event.keyCode;
		else if (e) keycode = e.which;
		if(keycode == 37){
		//alert('test');
		} else if(keycode == 39) {
			//alert('test2');
		}
	}
});