}
static PRBool pref_ValueChanged(PrefValue oldValue, PrefValue newValue, PrefType type){	PRBool changed = PR_TRUE;	if (type & PREF_STRING) {		if (oldValue.stringVal && newValue.stringVal)			changed = (strcmp(oldValue.stringVal, newValue.stringVal) != 0);    } else if (type & PREF_INT) {				changed = oldValue.intVal != newValue.intVal;    } else if (type & PREF_BOOL) {		changed = oldValue.boolVal != newValue.boolVal;    }	return changed;}