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anilkallamadi kallamadianilkallamadi kallamadi 

External application should be shown in the salesforce.com rather than opening in the new URL

I have a button in the Opportunity when clicked takes me to the external application outside the Salesforce.com application. But what I am looking is when I click the button the external application should be shown in the salesforce.com rather than opening in the new URL. Because users should not feel they have moved out of the salesforce.com application.

I am using iframe to show the external application in Salesforce.com

But when I am using iframe to get the external application into salesforce it is working in IE but not in firefox. I see a blank page when used with Firefox. Can any body know the reason why it is happening. The external application is built on Java and Oracle databse.

Please let me know if any solution.
PratikPratik (Salesforce Developers) 
Hi,

Please refer to this:
https://help.salesforce.com/apex/HTViewSolution?urlname=IFRAME-or-Web-Tab-Content-Displays-Blank-Page-1327107637323&language=en_US

Thanks,
Pratik