set the layout to unbounded scrolling and it should work.
Thank you very much, It works perfectly!
It just caused one small problem, This is my workarea:
<img src="http://s12.postimg.org/xks99pthp/image.png" border="0" />
And this is when I run the game:
<img src="http://s12.postimg.org/oe9ymfo99/image.png" border="0" />
Why is that?