Highlight the Tab in red based on the user selection

Hi All,

We design simple menu by using an option

a:hover {background-color:#CC0000; }

We want to heighlight the menu item which was selected by the user.

For example:

If i have 4 tabs(Home, Missing invoices, Sum of invoices, Sync Date)

If user in Missing invoices tab, It must be heighlight with Red color...And if user moved to the other tab.....The Missing invoices tab must go back to its own color