Dropdown uden "go" knap

Hej med jer.
Jeg har fundet nedenstående script som jeg gerne vil benytte.
Men jeg vil gerne have den skal virke uden "go" knap, således at brugeren blot bliver ledt hen på siden når de vælger i drop down menuen.
Hvordan gør man det?



<form name="dynamiccombo">
<select name="stage2" size="1">
<option value="#">This is a Place Holder</option>
<option value="#">This is a Place Holder</option>
<option value="#">This is a Place Holder</option>
</select>
<input type="button" name="test" value="Go!"
onClick="gothere()">
</form>

<script>
<!--

//Dynamic combo box script- by javascriptkit.com
//Visit JavaScript Kit (http://javascriptkit.com) for script
//Credit must stay intact for use

 
//DEFINE the group of links for display in the combo
//EXTEND each array and its elements as needed
//BE sure to follow the pattern revealed below
var combo1=new Array()
combo1[0]=new Option("JavaScript Kit","http://javascriptkit.com")
combo1[1]=new Option("Dynamic Drive","http://www.dynamicdrive.com")
combo1[2]=new Option("Freewarejava.com","http://www.freewarejava.com")
combo1[3]=new Option("Free Web Templates","http://www.freewebtemplates.com")
combo1[4]=new Option("Web Monkey","http://www.webmonkey.com")

var combo2=new Array()
combo2[0]=new Option("CNN","http://www.cnn.com")
combo2[1]=new Option("MSNBC","http://www.msnbc.com")
combo2[2]=new Option("BBC News","http://news.bbc.co.uk")
combo2[3]=new Option("ABC News","http://www.abcnews.com")

var combo3=new Array()
combo3[0]=new Option("Hollywood.com","http://www.hollywood.com")
combo3[1]=new Option("MTV","http://www.mtv.com")
combo3[2]=new Option("ETOnline","http://etonline.com")


var cacheobj=document.dynamiccombo.stage2

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

function gothere(){
location=cacheobj.options[cacheobj.selectedIndex].value
}

//SHOW first combo by default
populate(combo1)

//-->
</script>

<!--SET up your links, and pass in the name of the group (ie: combo1) you wish to display for the link in question-->
<a href="java script:populate(combo1)">Webmaster sites</a> | <a href="java script:populate(combo2)">News sites</a> | <a href="java script:populate(combo3)">Entertainment</a>


<p align="center"><font face="arial" size="-2">This free script provided by</font><br>
<font face="arial, helvetica" size="-2"><a href="http://javascriptkit.com">JavaScript
Kit</a></font></p>