A Web target assigns default IDs when you create commonly scripted objects. You can assign or change the ID for any object from Page view or Source view of the HTML editor.
To assign or change an ID:
Right-click the object and select the Properties menu item for the element from the pop-up menu
or
Select the HTML element and select Edit>Properties from the menu bar.
In the ID For Scripting text box, type a new value for the object.