[TYPO3] Put page subtitles into Templavoila menu

[Ian Tomkins]

Hi,

I would like to be able to get each page's subtitle to appear as a 
tooltip on it's menu entry.

I am using Typo3 v 4 and Templavoila 1.0.1.

Each menu entry is simply a link tag with a class tag used to set the 
relevant styles.

The current TypoScript for the menu looks like this:

lib.mainMenu = HMENU
lib.mainMenu {
entryLevel = 0

1 = TMENU
1.NO {
allWrap = |
ATagParams = class="nav"
}

--snip--

so what I want to do is add an additional title=xxx parameter to each 
entry containing the subtitle.  As an additional refinement it would be 
better if this is only added for pages that have the subtitle field set.

I am a bit of a newbie to Typo3 and still struggling to get my head 
around the details of TypoScript.

Thanks,

Ian