Dhtmlx tree grid

Is it possible to make the child of tree to be aligned with its parent ? Im developing an application such that when i select all the child of the tree and click a button it should be aligned along with its parent

The difference between level set by spacer image
    imgs/blanc.gif

so you can change the difference between levels by adjusting spacer image.

To fully remove difference between level you can add next css definition
   
       div.gridbox img.space{
          style.display=‘none’;
       }
   
this will hide all spacer images