I am using dhtmlxGrid version 2.6 build.I am experiencing a script error when I mousedown on a cell,drag to another cell (any same row or different row) and leave the mouse button.
This happens only when cell marking is enabled.
As I explained earlier, holding the mouse button drag the mouse pointer from one to another cell and leave the mouse button. A script error is seen. This occurs only you have enabled marking cells.
It is happening in the link/demo that you have provided. You have to click on a cell and move the mouse pointer holding the left mouse button to another cell and leave the mouse button.
I am using the IE version 8.0.6001.18702.
I have attached screenshot of the script error also