Bootstrap tabs, bootstrap modal and chartjs not loading hack fix

//graph1, graph2 are Chart instance
//modal is a global modal = $(this); from within $('.yourdiv').on('shown', function(event){ ....
//generateChart is method setting graph1 to new Chart.
//if dynamic/many charts make this dynamic, in this example i will always try to load both tabs, logic for only generating current should be implementet :)
$('#statistics-tabs a').click(function (e) {
	e.preventDefault();
	$(this).tab('show');
	setTimeout(function(){
	  if(graph1 != undefined) graph1.destroy();
	  if(graph2 != undefined) graph2.destroy();
	  $('#graph1').attr('height',300).attr('width',868);
		$('#graph2').attr('height',300).attr('width',868);
		generateChart(modal, '1');
		generateChart(modal, '2');
	}, 500);
});