$(function() {
  var interval = 30;
  var duration= 1000;
  var shake= 3;
  var vibrateIndex = 0;
  var selector = $('#frame');
	$('#activate').click(
	
	function(){	

	vibrateIndex = setInterval(vibrate, interval);
	setTimeout(stopVibration, duration);
	
	});

	var vibrate = function(){
	$(selector).stop(true,false)
	.css({position: 'relative', 
	left: Math.round(Math.random() * shake) - ((shake + 1) / 2) +'px', 
	top: Math.round(Math.random() * shake) - ((shake + 1) / 2) +'px'});
	}
	
	var stopVibration = function() {
	clearInterval(vibrateIndex);
	$(selector).stop(true,false)
		.css({position: 'static', left: '0px', top: '0px'});
	};

});