Actionscript - speed for Player vs Browser

Hallo I am using getTimer() function, and when I "ctrl+enter" - player works fine! But when i open swf file through any browser, or just hit "ctrl+f12" - the aplication works much more slower This happenes for flash 8, and MX example - http://ihtus.xmgfree.com/pendulum.swf but if i run it through player - it works faster, i mean it must work as in player You can download the SWF and see the difference any ideas?