The treecontrol does not support wraping in the manner you want.  Typically if it needs more space people will code it inside a scrolling div.  To see a sample of what I mean look here.  Notice how the scrollbars appear when expanded.

 

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Cool method. I will try it out too

Salar

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I consulted with a friend who knows nothing about DNN.  He was like, "Why don't you just specify a width".  So I specified a width for the child nodes, and they line up with themselves when wrapping.  Only problem now is the bullet piccy i'm using lines up with the bottom line of the wrapping child node rather than the top.