The full markup for the fifty-states multiple selection list:

<FORM>
<P>
Which states have you visited?<BR>
<SELECT multiple name="state" size=10>
<OPTION>Alabama
<OPTION>Alaska
<OPTION>Arizona
<OPTION>Arkansas
<OPTION>California
<OPTION>Colorado
<OPTION>Connecticut
<OPTION>Delaware
<OPTION>Florida
<OPTION>Georgia
<OPTION>Hawaii
<OPTION>Idaho
<OPTION>Illinois
<OPTION>Indiana
<OPTION>Iowa
<OPTION>Kansas
<OPTION>Kentucky
<OPTION>Louisiana
<OPTION>Maine
<OPTION>Maryland
<OPTION>Massachusetts
<OPTION>Michigan
<OPTION>Minnesota
<OPTION>Mississippi
<OPTION>Missouri
<OPTION>Montana
<OPTION>Nebraska
<OPTION>Nevada
<OPTION>New Hampshire
<OPTION>New Jersey
<OPTION>New Mexico
<OPTION>New York
<OPTION>North Carolina
<OPTION>North Dakota
<OPTION>Ohio
<OPTION>Oklahoma
<OPTION>Oregon
<OPTION>Pennsylvania
<OPTION>Rhode Island
<OPTION>South Carolina
<OPTION>South Dakota
<OPTION>Tennessee
<OPTION>Texas
<OPTION>Utah
<OPTION>Vermont
<OPTION>Virginia
<OPTION>Washington
<OPTION>West Virginia
<OPTION>Wisconsin
<OPTION>Wyoming
</SELECT>
</P>
</FORM>