add: span.valueSetByXForms = 0; 
context: function xformsHandleFirefoxValueChange(property, oldvalue, newvalue) {    var span = this;    var textField = span.childNodes[1];    if (span.valueSetByXForms == 0 && textField.value != newvalue) {        span.value = newvalue;        textField.value = newvalue;        xformsDispatchEvent(textField, "change");    }    return newvalue;}
meta: 9823	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9823/2a9d6bf83310e64f36a084cfadc66365d1fb8bd7/xforms.js/clean/src/examples/web/ops/javascript/xforms.js