function ShowItemsMenuWhenItemsSelected() {
var oldToggleItemRowSelection2 = ToggleItemRowSelection2;
ToggleItemRowSelection2 = function (ctxCur, tr, fSelect, a, b) {
    oldToggleItemRowSelection2(ctxCur, tr, fSelect, a, b)
    //var items = SP.ListOperation.Selection.getSelectedItems();
    if (ctxCur.CurrentSelectedItems > 0) {
        SelectRibbonTab("Ribbon.ListItem", true);  //set the Browse button as default
    }
    else {
        SelectRibbonTab("Ribbon.Read", true);  //set the Browse button as default
    }
}