In my maps ItemDataBound event I'm building the markers tooltip. The tooltip has an image in it that also acts as a hyperlink. So this works:
Dim TOOLTIP_TEMPLATE As String = "<a href=""Reports.aspx"" target=""_self""><img src=""Images/inventory.png"" /></a>"
This does not:
Dim TOOLTIP_TEMPLATE As String = "<asp:HyperLink runat=""server"" ImageUrl=""Images/inventory.png"" NavigateUrl=""~/Reports.aspx"" ToolTip=""To Inventory""></asp:HyperLink>"
FYI the only reason I even attempted to use the asp:Hyperlink was for the ToolTip property.