zoombar1.gif		(1:800)
zoombar2.gif		(1:2000)
zoombar3.gif		(1:4000)
zoombar4.gif		(1:6000)
zoombar5.gif		(1:10000)
zoombar6.gif		(1:25000)
zoombar7.gif		(1:80000)
zoombar8.gif		(1:300000)