RoomCheck

var myInterval = setInterval(roomCheck, 100);

function roomCheck()
{
    var SHELL = _global.getCurrentShell();
    var INTERFACE = _global.getCurrentInterface();
    var ENGINE = _global.getCurrentEngine();
    var rmc = ENGINE.getRoomMovieClip();
    if (rmc.customInterace === true)
    {
        return;
    }
    else
    {
        clearInterval(myInterval);
        this._visible = false;
        // and other code to revert interface.
    } // end if
} // end of the function