XML + Javascript help needed

Probably a redundant questions, but I cant find the answer.

Im trying to show some XML data from a normal responseXML object:

var xmlDocument=http.responseXML;
var nodeList=null nodeList=xmlDocument.getElementsByTagName('gage_st amp')
var city=nodeList.item(0).firstChild.data
alert(city)

The data will popup in Firefox, but IE6 gives me an "Object Required" error.

Any suggestions

Thanks

Please provide sample xml?