There is a small glitch that closes / openes new popover upon mouse move in case original popover was opened on mouse click.
Created attachment 50149 [details] initial version of patch.
Comment on attachment 50149 [details] initial version of patch. I'll land.
Variation of patch landed (killed timer upon click and brushed up url business in timeline's popover). Committing to http://svn.webkit.org/repository/webkit/trunk ... M LayoutTests/inspector/timeline-network-resource-expected.txt M WebCore/ChangeLog M WebCore/English.lproj/localizedStrings.js M WebCore/inspector/front-end/Popover.js M WebCore/inspector/front-end/TimelinePanel.js Committed r55614