Linking to html frame

The script below will open a web page in a popup, however I need it to open a page in an html frame. How can this be done?

var labels:Array = new Array(“web attack”, “Macromedia”, “ASP.Net”);
var links:Array = new Array(“http://www.webattack.com”, “http://www.macromedia.com”, “http://www.asp.net”);
for (var i=0; i<labels.length; i++) {
_root.myCombo.addItem({label: labels*,
data: links*});
}

var obj:Object = new Object();
obj.change = function (evt){
selectedLab = evt.target.selectedItem
trace(selectedLab.label);
trace(selectedLab.data);
getURL(selectedLab.data,"_blank",“POST”);
}
myCombo.addEventListener(“change”, obj);
[size=1][/size][size=1][/size]