Fix to properly check for 'undefined'#684

Merged

mramato merged 9 commits intoCesiumGS:masterfrom andr3nun3s:issue89

Apr 25, 2013

+89-80

Commits on Apr 23, 2013

Fix to properly check for undefined values
andr3nun3s
committed

Commits on Apr 25, 2013

Fix to properly check for 'undefined' and assign default values
andr3nun3s
committed