TheAbacus - pastebin.com/qY1e6sjm

gistfile1.js

// JavaScript Document
function Temp() {
	var test = "testing";	
}

Temp.prototype.init = function() {
        test = this.test;
	$.ajax({ //IE errors here.
		url: "xd_subnav.xml",
		dataType: "xml",
		success: function(xml) {
			alert(test);
		}
	});
	
}

a = new Temp();
a.init();