<form name="auswahl">
<p><select name="example" size="1" onChange="redirect(this.options.selectedIndex)">
<option>Hier un Heute</option>
<option>Lass uns singen</option>
<option>Suchmaschinen</option>
</select>
<select name="stage2" size="1">
<option value="index.html">Gästebuch</option>
<option value="index.html">Impressum</option>
</select>
<input type="button" name="test" value="Go!" onClick="go()"></p>
<script>
<!--

var groups=document.auswahl.example.options.length
var group=new Array(groups)
for (i=0; i<groups; i++)
group[i]=new Array()

group[0][0]=new Option("Gästebuch","index.html")
group[0][1]=new Option("Impressum","index.html")
group[0][2]=new Option("Suchmaschienen","lalal")

group[1][0]=new Option("lalelu","lalelu")
group[1][1]=new Option("lalelu","lalelu")

group[2][0]=new Option("Hotbot","http://www.hotbot.com")
group[2][1]=new Option("Infoseek","http://www.infoseek.com")
group[2][2]=new Option("Excite","http://www.excite.com")
group[2][3]=new Option("Lycos","http://www.lycos.com")
group[2][4]=new Option("Lycos","http://www.lycos.com")
group[2][5]=new Option("google","http://www.google.de")

var temp=document.auswahl.stage2

function redirect(x){
for (m=temp.options.length-1;m>0;m--)
temp.options[m]=null
for (i=0;i<group[x].length;i++){
temp.options[i]=new Option(group[x][i].text,group[x][i].value)
}
temp.options[0].selected=true
}

function go(){
location=temp.options[temp.selectedIndex].value
}

//-->
</script>
</form>