camera gets locked at a point

-------------------------------------------------------------------------
default
{
touch_start(integer number)
{
llSetCameraParams([CAMERA_ACTIVE,TRUE,CAMERA_POSITION, llGetPos()+<0,0,5>,CAMERA_FOCUS, llGetPos(),CAMERA_POSITION_LOCKED,TRUE,CAMERA_FOCUS_LOCKED,TRUE]);
}
}
--------------------------------------------------------------------------

This script sets camera at right position but how can i come out of camera view to normal view(by some pressing some key or something) ???

This script will toggle camera on and off your setting

integer camOn = TRUE;
default
{
    touch_start(integer number)
    {
        if ( camOn ) llSetCameraParams([CAMERA_ACTIVE,TRUE,CAMERA_POSITION, llGetPos()+<0,0,5>,CAMERA_FOCUS, llGetPos(),CAMERA_POSITION_LOCKED,TRUE,CAMERA_FOCUS_LOCKED,TRUE]);
        else llSetCameraParams([ CAMERA_ACTIVE, FALSE ]);
        camOn = !camOn;
    }
}