Help locating Javascript for Mouse Drag

I recently started working for a company that had been getting all of its software provided by overseas developers.

I was hired on because of my years of experience in software, but all of those years were in Windows Forms using C#. This project is still in Visual Studio, but largely it is controlled by HTML, CSS, and Javascript - which I am not good at.

My assignment right now: When User drags on a row on a table, a pointer appears on the left of the grid control, follows the row to...

Help locating Javascript for Mouse Drag

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