How do i create a drop-down menu in SharePoint that redirects to a new page?..

Question

Helly everyone, i have a question and really hope someone can help me out here:)
In SharePoint i want to create a drop-down menu that has the possibelty to redirect to other websites.
I fount the code below and it works but just not in SharePoint:(
It only shows the drop-down list but it doesn't redirect you to another website if you click on a site.
Can someone please help me out because it's really getting frustrating.
<form method="post" action="" name="">
<select name="select15" onChange="window.open(this.options[this.selectedIndex].value,'_parent')">
<option selected>Please Select Site to Visit</option>
<option>---------------------------------------------------</option>
<option value="http://leedssocialclubs.co.uk">Leeds Social Clubs </option>
<option value="http://yahoo.co.uk">Yahoo </option>
<option value="http://msn.com">MSN </option>
<option value="http://Moonfruit.com">Moonfruit </option>
<option value="http://burystaffhire.moonfruit.com/#/home/4548482603">Bury Staff Hire</option>
</select>
</form>

Answer 1

<form>
<select name="URL" onchange="window.location.href=this.form.URL.options[this.form.URL.selectedIndex].value">
<option value="">Choose a site</option>
<option value="http://webdesign.about.com/">Web Design Front Page</option>
<option value="http://webdesign.about.com/library/beginning/bl_begin.htm">
Beginning HTML</option>
<option value="http://webdesign.about.com/od/javascript/">JavaScript Help</option>
</select>
</form>
Demo url
http://webdesign.about.com/od/examples/l/blfaqddredirect.htm
script url
http://webdesign.about.com/od/javascript/a/aa050701a.htm
For me it is working fine