That is not a proper size for a flash site
So far animation and graphics were very good, but i found some flaws that needs to be corrected.
-For a flash site, use a canvas size of 800 x 600 pixels.
-Remove the frog or make it do something else, that NAHNAH sound is annoying.
-Use a higher fps rate (frame per seconds), for flash websites i use from 30 to 50.
That is all, i liked how the preloader worked. :)