Drag on drop not working between cells in dhtmlxLayout

I have 3L dhtmlxLayout, and also i have grid in cell a as well as cell b.

var dhxLayout;
listGrid;
ngrid;
function doOnLoad() {
dhxLayout = new dhtmlXLayoutObject(document.body, ‘3L’);
dhxLayout.attachHeader(‘my_logo’);
dhxLayout.attachFooter(‘my_copy’);

listGrid = dhxLayout.cells('a').attachGrid();
listGrid.selMultiRows = true;
listGrid.setImagePath('codebase/imgs/');
listGrid.setSkin('light');
listGrid.setMultiLine(false); 
listGrid.loadXML('step3.xml?etc='  new Date().getTime());
							
    plangrid = dhxLayout.cells('b').attachGrid();
    plangrid.selMultiRows = true;
    plangrid.setImagePath('codebase/imgs/');
plangrid.setSkin('light');
plangrid.setMultiLine(false); 
plangrid.loadXML('step1.xml?etc='  new Date().getTime());
listGrid.enableDragAndDrop(true); 
plangrid.enableDragAndDrop(true); 								

}

Drag on drop is not working… any one help.

Unfortunately the issue cannot be reproduced locally.
Please, make sure that you’ve included dhtmlxGrid_drag.js to the page.
If issue still occurs for you - please, provide us with a complete demo, where the issue can be reconstructed.
Here you can find a tutorial:
docs.dhtmlx.com/doku.php?id=othe … leted_demo

Thanks, a Lot. I have missed dhtmlxGrid_drag.js

thanks again.