Resize SVG height to fit contents using jQuery

gistfile1.js

function sizeSVG($svg){
	var max_x = 0;
	$svg.find('*').each(function(){
		var bounding_rect = $(this)[0].getBoundingClientRect();
		var x2 = bounding_rect.top + bounding_rect.height;
		if(x2 > max_x){
			max_x = x2;
		}
	});
	$svg.css('height', max_x);
}