Setting the Hover Effect
The hover effect allows users to mouse over a first-level tab in top-level navigation to see the tab’s second level entries. This function is activated by setting a specific property of the Top-Level Navigation iView (com.sap.portal.topLevelNavigationiView).
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1. In the Portal Catalog, go to Portal Content → Portal Users → Standard Portal Users.
2. Right-click Default Framework Page (com.sap.portal.frameworkpage) and choose Open → Page to display the page in the Page Editor.
3. Select the Top-Level Navigation iView and click Open to display the iView’s properties in the Property Editor.
4. From the Show dropdown list, select All Properties.
5. Click Modify.
6. Browse to the Hovering property and enter the value True.
7. Save the change.

The hover feature must be disabled in the following cases:
§ In portals whose Accessibility flag is activated.
§ In desktops used for navigation zoom windows.