No scroll lock in Toshiba L300-254

Hello,



I recently purchased Toshiba L300-254, but I was dissappointed to find that there is no Scroll- lock key in it. I am not able to play some games wherein the arrow keys have to be used. When the up & down arrow keys pressed the page moves itself up and down and hence not able to lock the page. Pls give me a solution.Thanks