[FIX] Why searching for a fileId that we don't know, fix the problem on dev.tiki.org/Tiki11

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/11.x@47110 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] mouseover: Add custom class to the default instead of replacing it (If the custom one didn't define display:none it would show in the page) Should fix wish4588? Thanks Geoff

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/11.x@47111 b456876b-0849-0410-b77d-98878d47e9d5