[visualization-api] How to test if a browser support Google charts?

[Ruut B]

I
opened https://developers.google.com/chart/interactive/docs/gallery/combochart
in Safari 5.1.7 which I downloaded today. The graphs are not
shown. I installed Safari on a Window 7 computer. When I run the following
code to detect if SVG is installed the function returns true:
function supportsSvg() {
var supportsSVG = false;
try{
var svg = document.createElementNS("http://www.w3.org/2000/svg",'svg');
supportsSVG = typeof svg.createSVGPoint == 'function';
}catch(e){}
return supportsSVG;
}


How to test if a browser support google charts?