Show bookmarks menu on mouse hover unstable

[dima6526]

Showning bookmarks menu on the side of the screen on mouse hover has 2 problems: 1. when the mouse touches the edge and is not moved immediately, the menu wil just disappear, so you have to move it to the edge and right back a little bit. 2. (and more serious) it is not possible to use right click menu on the items because the whole menu will crash straight away.