A handy script used for field alignment when layout/section usage on a section messes up the alignment of the UI elements on that screen. 
Examples of syntax:
padding-left:4px;
padding-top:4px;

* It is always recommended to update the Stylesheet and Skin to manage UI component feature changes, rather than inline style changes. This makes the application more unified, consistent and reusable. Internet Explorer's Developer Tool (F12) is a useful tool to find the right element to be updated in an Stylesheet.

If you are planning to display the Application Selector in the navigation panel in your classic portal, simply select "Show Application Selector"  option on Options tab of the portal rule. 

It also possible to have a Property field with AppSwitch Control. The property name has to be  pyPortal.pyCurrentApplication in order to show the current application.

Add a MenuBar Control to your portal's top header, and define a Navigation rule  where you can Run Script. The details are as follows. 
* Remember to include  the required JavaScript file to the harness.