try
<script language="JavaScript1.2">
/*
Drop down menu link
© Dynamic Drive (www.dynamicdrive.com)
For full source code, installation instructions,
100's more DHTML scripts, and Terms Of
Use, visit dynamicdrive.com
*/
//Contents for menu 1
var menu1=new Array()
menu1[0]='<a href=test.htm>Menu link here</a><br>'
menu1[1]='<a href=test.htm>Menu link here</a><br>'
menu1[2]='<a href=test.htm>Menu link here</a><br>'
//Contents for menu 2
var menu2=new Array()
menu2[0]='<a href=test.htm>Menu link here</a><br>'
menu2[1]='<a href=test.htm>Menu link here</a><br>'
menu2[2]='<a href=test.htm>Menu link here</a><br>'
//Contents for menu 3
var menu3=new Array()
menu3[0]='<a href=test.htm>Menu link here</a><br>'
menu3[1]='<a href=test.htm>Menu link here</a><br>'
menu3[2]='<a href=test.htm>Menu link here</a><br>'
</script>
<style>
<!--
.iewrap1{
position:relative;
height:30px;
}
.iewrap2{
position:relative;
}
#dropmenu0, #dropmenu1, #dropmenu2{
visibility:hide;
z-index:100;
}
-->
</style>