C# WebBrowser SWFObject Object doesn't support property or method

Hi

I am trying to develop an HTML5 application. My application works well in IE. But when i load it in C# WebBrowser it doesn't work well with swf.

I need to communicate with swfobject from js. SWF is loaded with swfobject.embedSWF using ajax.googleapis swfobject.js. Sometimes its loading successful sometimes nothing happen. Even if it loaded successfully i cant call ExternalInterface method "ExternalInterface.addCallback("initialise", initialise);". I am getting the same error "Object doesn't support property or method 'initialise'"

Please help me on this

Regards
abduRahman