How to remove the Column of Gridview using javascript

var grid = 

document.getElementById("<%=Gridview1.ClientID %>");

   if (grid.rows.length > 0)

     {

         for (i = 0; i < grid.rows.length; i++)

          {  

           if(grid.rows[i].cells[2] != null)

             {

                grid.rows[i].cells[2 ].style.display = "none";

                          

                    }

                 }

                  

              }