Åben i nyt vindue

Hej

Jeg vil gerne have nedenstående script til at åbne i et nyt vindue men kan ikke få det til at virke!
Er der nogen der kan klare den ?

<script>
<!--
/*
Random link button- By JavaScript Kit (http://javascriptkit.com)
Over 300+ free scripts!
This credit MUST stay intact for use
*/

//specify random links below. You can have as many as you want
var randomlinks=new Array()

randomlinks[0]="http://freewarejava.com"
randomlinks[1]="http://javascriptkit.com"
randomlinks[2]="http://dynamicdrive.com"
randomlinks[3]="http://cnn.com"
randomlinks[4]="http://www.geocities.com"

function randomlink(){
window.location=randomlinks[Math.floor(Math.random()*randomlinks.length)]
}
//-->
</script>
<form>
<p><input type="button" name="B1" value="Random Link >>" onclick="randomlink()"></p> </form>

<!--Uncomment below to use a regular text link instead
<a href="java script:randomlink()">Random Link</a>
-->