Double click event in same container ( /ico/mo/3c)

Hi,

I have a typical requirement where I have a subscreen which is configured in sales cockpit transaction (/ico/mo_3c).

In the subscreen area I have created one container. In container I have created a grid and displayed the ALV data(Header data).

in the grid I have handled double click event to display the Item data. Item data is displaying properly in the same sub screen area. But on Item data when I double click again the same event (double click event ) is triggering which should not trigger.

Is there any possibilities to handle the event for the initial display.