Essential！ Rated 5 out of 5 stars
It seems that shift+right click will trigger firefox's internal inspector instead of dom inspector dm.with element inspector installed.Dom inspector (original version ) doesn't have this problem.Hope for fix.
Solution listed in "Complementary Stuff:" section
... there is a copy of "element inspector" that works with this.
I like being able to Scroll right to see vlues of previously 'empty' ID's Rated 4 out of 5 stars
Nice, works well and loads quickly.
some sub elements (id's) need to be double-clicked as expand tree > arrow is nested in id and does not expand when clicked.