src/main/java/de/jformchecker/FormChecker.java
private void sortTabIndexes() {
		int tabIndex = 100;
		for (FormCheckerElement elem : form.getElements()) {
			elem.setTabIndex(tabIndex);
			tabIndex = elem.getLastTabIndex();
			tabIndex++;
		}
	}
private void sortTabIndexes() {
		int tabIndex = 100;
		for (FormCheckerElement elem : form.getElements()) {
			elem.setTabIndex(tabIndex);
			tabIndex = elem.getLastTabIndex();
			tabIndex++;
		}
	}
resort tab-indexes