Abbreviate long titles in search dropdown

Is there a way to abbreviate the titles in the custom properties search module? Either that or manually set the width of the dropdown box? Right now the length of some of them is making the dropdown extend past the edge of the column and my attempts at editing the css have been unsuccessful.

Example of the problem is shown on this page:

www.nll.no/index.php?option=com_fjrelate...=blog&id=0&Itemid=80

Look in the left column in Artikkel Register box.

You can add the following statements to the CSS stylesheet:
and also this (if you don't want the length of the option to exceed the length of the select element)