【select】
<HTML>
<BODY>
<FORM name="f1">
<SELECT name="s1">
<OPTION SELECTED value="http://www.w3cschool.cn">java2s
<OPTION value="http://www.cnn.com">D
<OPTION value="http://www.google.com">C
<OPTION value="http://www.yahoo.com">B
<OPTION value="http://www.java.com">A
</SELECT>
<INPUT type="button" name="go" value="Go!" onClick="window.location=document.f1.s1.options[document.f1.s1.selectedIndex].value">
</FORM>
</BODY>
</HTML>
