Treview plugin, relative units vs. IE

Treview plugin, relative units vs. IE

I like Treeview for simple trees. It is highly expandable. However, put the tree inside any layout with relative padding or margin and IE bails out (as usual). I tried to modify the style for relative positioning instead of float and negative margin for hitarea but still no success. Would anyone know how to fix the style while keeping the plugin struct and functionality?
Here is some sample doc with dynamic tree for illustration and original /custom version testcase.