Parsing XML with javascript problem

Question

I have some javascript in which I need to step through all the elements of some XML. An example of the XML is shown below:

 <rules><and><eq propName="Unit1"/><gt propName="Unit2"/><or><startsWith propName="Test"/></or></and></rules>

I need check each part as I need to create objects based on the contents. Can someone supply a basic code framework that would allow me to examine this xml.

I have tried some code that calls itself but am getting confused on child nodes. Here is what I have so far (which doesn’t work).

load_rules_xml: function (value) {
    var dom = $.xmlDOM(value);

    this.add_rule_to_array(dom, null);
},

add_rule_to_array: function (xml, type) {
    if (xml.length > 0) {
        for (i = 0; i < xml.children.length; i++) {
            var c = xml.children(i);
            this.add_rule_to_array(c.children, null);
        }
    }

}