Extract one variable from a Array(hope I worded that right)

Okay I am going to reword this to make this easier.

I have a XML file with this field:

<link>http://www.definitivetheater.com</link>
<link>http://www.renewlending.com</link>

In Actionscript I have put the following code to hold the information in the XML:

link = [];
link
= xmlNode.childNodes
.childNodes[3].firstChild.nodeValue;**

Now I have a button that has the following code in it:

**on (release) {
getURL(_root.link, “_blank”);
**}
Because my variable link has all the information from the xml stored in it the web address outputs:

**http://www.definitivetheater.com, **http://www.renewlending.com

How can I get it to just target the first <link>?