public static void install(String app) {
   ChoosePropertiesTagUtil.application = app;
   Table table = el("propertiesTable");
   HTMLCollection<TableRow> rows = table.rows;
   for (int i = 1; i < rows.length; i++) { // row 0 is placeholder
     TableRow row = rows.$get(i);
     Image openClose = NextGlobalJs.next.dom.getInnerElementById(row, "openCloseBtn");
     openClose.style.visibility = "hidden";
     if (i + 1 < rows.length) {
       TableRow row2 = rows.$get(i + 1);
       String row1Property = row.getAttribute("data-forProperty");
       String row2Property = row2.getAttribute("data-forProperty");
       if (row2Property.length() > row1Property.length() + 1) {
         String base = row2Property.substring(0, row1Property.length() + 1);
         if (base.equals(row1Property + ".")) {
           openClose.style.visibility = "";
           colapseGroup(row, rows);
           installOpenCloseButton(openClose, row, rows);
         }
       }
     }
   }
 }
 private static void colapseGroup(TableRow row, HTMLCollection<TableRow> rows) {
   for (int i = row.rowIndex + 1; i < rows.length; i++) {
     TableRow row2 = rows.$get(i);
     String row1Property = row.getAttribute("data-forProperty");
     String row2Property = row2.getAttribute("data-forProperty");
     if (row2Property.length() > row1Property.length() + 1) {
       String base = row2Property.substring(0, row1Property.length() + 1);
       if (base.equals(row1Property + ".")) {
         row2.style.display = "none";
       } else {
         break;
       }
     }
   }
 }
 private static void openGroup(TableRow row, HTMLCollection<TableRow> rows) {
   String row1Property = row.getAttribute("data-forProperty");
   for (int i = row.rowIndex + 1; i < rows.length; i++) {
     TableRow row2 = rows.$get(i);
     Image openClose = NextGlobalJs.next.dom.getInnerElementById(row2, "openCloseBtn");
     openClose.src = application + OPEN;
     openClose.setAttribute("data-open", "false");
     String row2Property = row2.getAttribute("data-forProperty");
     if (row2Property.length() > row1Property.length() + 1) {
       String base = row2Property.substring(0, row1Property.length() + 1);
       if (base.equals(row1Property + ".")) {
         if (row2Property.substring(base.length()).indexOf('.') > 0) {
           continue;
         }
         row2.style.display = "";
       } else {
         break;
       }
     } else {
       break;
     }
   }
 }