How to open iview in same browser window

Hi.

I am using EP 6.0

I have created sever iviews of type IAC. All was working fine.

Now suddenly the iviews have started opening in a new browser window. I have check the iview poperty "Launch in new window " . Its set to "Display in Portal Content Area".

All I want is, when I click on any iview, a new internet explorer window should not pop up, but the iview shud open in the same window.

Can anyone advise me how to achieve this ?

Thanx

Vikram