Help in a hurry!

I just copied a movie that is picture viewer on to my main page. copied everything the way it is, but when I preview it the following error appears.


Error Scene=main, layer=space, frame=1:Line 8: There is no method with the name ‘Round’.
picalpha = Math.Round(getProperty(picnum, _alpha));
Error Scene=main, layer=space, frame=1:Line 10: There is no method with the name ‘Math’.
oldpicalpha = Math.Math.round(getProperty(oldpicnum, _alpha));
Total ActionScript Errors: 2 Reported Errors: 2


–So my question is what am I supposed write for method.

Please let me know ASAP. Thanks.