How to use this? I have in my XML file,

ClientSideOnTabMouseOver="ajax_showTooltipr('itempopup.aspx?n=24347')"

Nothing happens when I hover over tab item?

It should be something like this,

ClientSideOnTabMouseOver="TabStrip1_OnTabMouseOver"

function TabStrip1_OnTabMouseOver(tab)
{
//your logic here
}

Thank you for the reply, how do I pass my value to my function though.

I have added ClientSideOnTabMouseOver="myFunction" to the strip and it does call my function. However the value from ClientSideOnTabMouseOver field in my XML file does pass to the function. I need to pass my product id plus the control/tab id to my function.

Thanks

In your xml file have the tab id and product id
<code>
<tab Text="Test" ID="tabId1" ProductIdD="productId1" />
</code>
And function could be something like this,
<code>
ClientSideOnTabMouseOver="TabStrip1_OnTabMouseOver"

function TabStrip1_OnTabMouseOver(tab)
{
ajax_showTooltipr(tab.ID, tab.GetProperty("ProductID"));
}
</code>