Renamed Polygon.gif to Polygon.png
Renamed MissingIcon.gif to MissingIcon.png
Renamed Logo-jpicedt.gif to Logo-jpicedt.png
Renamed LineWidth4.gif to LineWidth4.png
Renamed LineWidth3.gif to LineWidth3.png
Renamed LineWidth2.gif to LineWidth2.png
Renamed LinePoint2.gif to LinePoint2.png
Renamed LinePoint1.gif to LinePoint1.png
Renamed LineDashTransparent.gif to LineDashTransparent.png
Renamed LineDashOthers.gif to LineDashOthers.png