Hide before/after horizontal line in tree

[Autoflow]

I need to hide the horizontal line which indicates before/after drop in tree.
Is this possible?

[paramvir]

There is no option to hide it currently.

[Autoflow]

If you have a css based approach this would fit for me too 

[paramvir]

There is no simple css workaround, you could use this unofficial way ( not recommended though as it may break in upcoming version ) to override it.

Code: [Select]

$.paramquery.cDrop.prototype.newF = function(){
  return $();
}