Pull in fix for #1513 from 57963c4.
Pull in fix for #1513 from 57963c4.

Failed to notice this when I was pulling in the updated JS.

lzpfmh/framework-2,sortable/framework,listatree/framework,sortable/framework,listatree/framework,lzpfmh/framework-2,lift/framework,listatree/framework,listatree/framework,lift/framework,lzpfmh/framework-2,lift/framework,lift/framework,sortable/framework,lzpfmh/framework-2,sortable/framework