Fix panning bug. Panning no longer starts as soon as the button is clicked.
Fix panning bug. Panning no longer starts as soon as the button is clicked.

nnamon/coursemology.org,nnamon/coursemology.org,allenwq/coursemology.org,allenwq/coursemology.org,dariusf/coursemology.org,allenwq/coursemology.org,Coursemology/coursemology.org,allenwq/coursemology.org,dariusf/coursemology.org,Coursemology/coursemology.org,dariusf/coursemology.org,dariusf/coursemology.org,nnamon/coursemology.org,Coursemology/coursemology.org,nnamon/coursemology.org,dariusf/coursemology.org,Coursemology/coursemology.org,allenwq/coursemology.org,nnamon/coursemology.org,Coursemology/coursemology.org