Context menus are finicky on where you can click

Example fix:

.jframe-shared ul.context-menu li {
padding: 0;
}
.jframe-shared ul.context-menu li a {
padding: 3px 3px 3px 23px;
background-position: 3px 3px;
display: block;
}

Note that we can't just dump this in there; we need to check other css declarations that reference the context menu and make sure they don't depend on the other styles being present. Also note that this has no dependence on any JavaScript or anything; it's purely a layout problem.