How can I adjust the column width in iTunes when the column lines do not show?

I am using list view in the playlists. Most of them still show the column lines, so I can adjust the width of the columns by clicking and dragging; but, in many of the playlists, the column lines are not visible and I have no way to adjust the width. As a result, I have columns that are so wide that I have to use the horizontal scroll bar to see all the info. In addition, I cannot organize songs by album, song, etc. since it does not show the names of the categories at the top of the list window. Can anyone help me?