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Invalid Cast exception while getting the document of the Webpage loaded

Hi...
I am trying to create an object of Shdocvw.InternetExplorer class, using which I need to launch a particular URL(A JSP Webpage). Then I need to get the document of the page loaded. But while doing so, I encounter an Invalid cast exception for some properties of the document like frames, parent window, scripts and location. I also need to execute a script on this JSP. While doing so, this exception comes out. How can I overcome this?

Following is the code snippet:

public SHDocVw.InternetExplorer ieBrowser;
mshtml.HTMLDocument doc2 = null;
doc2 = ieBrowser.Document as mshtml.HTMLDocument;
Dec 27 '06 #1
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