Shoutbox

While working on some script, I coded the following.

code:

---

<Control xsi:type="ListBoxControl" Id="lstSettingsPages">
    <Position Left="5" Top="40" Width="70" Height="218"/>
    <Items>
        <!-- ... -->
    </Items>
</Control>

---

I cannot set a correct height, look at the following image:


With 218, the box is too low, with 219, it is too high, why is there such a big jump between the both?

Windows XP Service Pack 2 (5.1.2600)
Windows Live Messenger 9.0.1407
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