After graph.refresh() called all nodes with no adjacencies was placed outside the visible area or on the corner and it was difficult to work with this items. This change makes visible area smaller (on a half of levelDistance option) and all the nodes becomes visible.
Also yuicompressor version updated to 2.4.7 from 2.4.2 and make.py cleaned for pep8.
After graph.refresh() called all nodes with no adjacencies was placed outside the visible area or on the corner and it was difficult to work with this items. This change makes visible area smaller (on a half of levelDistance option) and all the nodes becomes visible. Also yuicompressor version updated to 2.4.7 from 2.4.2 and make.py cleaned for pep8.