Maybe this is an easy question, maybe not. I have a select box where I hardcode with width. Say 120px.
<select style="width: 120px">
<option>REALLY LONG TEXT, REALLY LONG TEXT, REALLY LONG TEXT</option>
If you have the option pre-existing in a fixed-with
<select>, and you don't want to change the width programmatically, you could be out of luck unless you get a little creative.
titleattribute to each option. This is non-standard HTML (if you care for this minor infraction here), but IE (and Firefox as well) will display the entire text in a mouse popup on mouse hover.