firefox 3 support

[pagameba]

With the release of firefox 3, it is important that we go through fusion and check for compatibility. There is at least one issue that has come up with z-indexes, the measure tool does not display correctly. Another issue that I have seen is that the map's context menu is now hidden below the map - in this case it was because the context menu had a z-index and the element the map was in did not.

[pagameba]

just confirmed that setting the z-index of OpenLayers Viewport to 1 allows the measure tool line and distance markers to show up.

[pagameba]

Originally reported in ​http://trac.osgeo.org/mapguide/ticket/615 - be sure to update that ticket when this one is closed.

[madair]

(In [1438]) closes #86: explicitly set OL viewport zIndex to 0 for FF3

[madair]

(In [1439]) re #86: explicitly set OL viewport zIndex to 0 for FF3 - patch applied to 1.0 branch