Auto Focus to Text (Dynamic/static)

programming flash
1

hi guys, how do i make my text cursor activates in my dynamic text when i first launch my program(swf) by CTRL+Enter in adobe flash?

tf.border = true;
tf.type = "input";
tf.addEventListener(KeyboardEvent.KEY_DOWN,reportKeyDown);
tf.addEventListener(KeyboardEvent.KEY_UP,reportKeyUp);

function reportKeyDown(event:KeyboardEvent):void
{
    trace("Key Pressed: " + String.fromCharCode(event.charCode) + 
        " (key code: " + event.keyCode + " character code: " 
        + event.charCode + ")");
    if (event.keyCode == Keyboard.SHIFT) tf.borderColor = 0xFF0000;
}

function reportKeyUp(event:KeyboardEvent):void
{
    trace("Key Released: " + String.fromCharCode(event.charCode) + 
        " (key code: " + event.keyCode + " character code: " + 
        event.charCode + ")");
    if (event.keyCode == Keyboard.SHIFT)
    {
        tf.borderColor = 0x000000;
    }
}