Firefox Console says "Unknown property '-rave-layout'.Declaration dropped."

Question

I'm just wondering because I'm trying to debug some css issues and ran
across these.
Is this a known problem?
Is this innocuous?
Is Firefox wrong? I'm using version 1.5.0.1
..., and while we are at it I also see this other Error
Error in parsing value for property 'display'.Declaration dropped.
this is referring to
http://localhost:28080/MyProject/theme/com/sun/rave/web/ui/defaulttheme/css/css_master.css
line 38
which is this
.AddRmvHrzDiv {margin:5px 7px 10px 0px; float:left; display:inline-table}

Answer 1

This is not a problem or error, but a property used internally to jsc in order to store information on the styles that should be applied to a layout panel.
The CSS spec allows for tools and browsers to extend the spec through new selectors, all of which start with a '-'. This can be seen by many of the tags that mozilla has added to the spec that are not recognized by IE and other browsers (-moz-border-radius stands out to me). While firefox does not know how to render this style selector, the internal browser in creator does, and that's what it is used for. You can safely ignore any warnings or errors that firefox generates from this.