Fix the getBBox issue in IE11.
Fix the getBBox issue in IE11.

 - If the parent remains in a non-visible mode, the getBBox returns nill(zero) value in IE11 browser.
 - So recursively the element`s parents visibility informations are first stored in a tree structure and made visible.
 - Once all calculation are over, they are all restored to their original visibility state.

fusioncharts/redraphael,fusioncharts/redraphael,fusioncharts/redraphael