dojox.charting: roll back indexOf() solution, which is not supported on IE < 9.
dojox.charting: roll back indexOf() solution, which is not supported on IE < 9.

git-svn-id: ee6e786acc44c9cca5ee17c71a5576c45c210361@28061 560b804f-0ae3-0310-86f3-f6aa0a117693

redaktor/deliteful