Condition Question for Postbit

[Lizard King]

I am trying to accomplish a condition.
The condition will be about the post numbers.
<if condition ="$post[postcount] even >

<else />

</if>

Hope i could explain. What i am trying to accomplish is to have 2 different layout on postbit template. If the postcount number is odd the layout will look like

avatar ---------- thread information

if the postcount is even

thread information ---------- avatar