I’ve been looking at some JavaScript libraries to be used for data visualization – there are quite a few, from impressive heavy duty data visualization frameworks like D3 (which requires modern browsers that support SVG) through powerful vector rendering libraries like RaphaĆ«l that work across almost all browsers and versions using SVG or VML for older versions of IE.
The following is a sample from yet another library (JSDraw2DX) that works on both IE and non-IE browsers. View frame source to see the simplicity with which these libraries can create useful presentations (click and drag the yellow dots).