How do I open .ivr files?

I created a sphearical render, then exported it from revit 2008 and now i don't know how to open it!|||may be these links will help u





http://www.fileinfo.net/extension/ivr


filext.com/file-extension/IVR


www.panoramafactory.com/help/hid_ivr.h鈥?br>




All the Best