I think on the graphing tool its as simple as the need to support IE6, 7, and 8. There are decent Canvas wrappers for relatively static content on IE (excanvas

I think on the graphing tool its as simple as the need to support IE6, 7, and 8. There are decent Canvas wrappers for relatively static content on IE (excanvas etc) and an increasingly interesting SVG wrapper at http://code.google.com/p/svgweb/ http://code.google.com/p/svgweb/ but for more dynamic graphics with sliding and zooming I've never found one that's good enough for production.