JSPlot
Javascript Library for plotting stocks or other data type using HTML5.
...It can work with dinamic javascript frameworks, eg. js Ext and jQuery. You are able to use data sources, so different parts of the same data can be plotted at the same time on your page.
You can pan and zoom your plots with mouse and keyboard shortcuts.
You can use multiple type of indicators. You can read indicator data over your plot, or you can set a function that generates it from your plot data.
The documentation can be found at http://jsplot.sourceforge.net/wiki/index.php/Main_Page