From default UI, EQUI_Animations.xml
<Ui2DAnimation item = "A_TabFrameRight">
<Cycle>true</Cycle>
<Frames>
<Texture>window_pieces01.tga</Texture>
<Location>
<X>179</X>
<Y>124</Y>
</Location>
<Size>
<CX>4</CX>
<CY>2</CY>
</Size>
<Hotspot>
<X>0</X>
<Y>0</Y>
</Hotspot>
<Duration>1000</Duration>
</Frames>
</Ui2DAnimation>