EXTJS grid tooltip?

Hello,

I am asking me how it could be possible to implement a tooltip for a cell in data grid.
With EXTJS 4 it should possible.

In MODX EXJS 3.4 I found nothing.

Thank your an idea.

Bye
Chris

found a solution:
in column definition:

        renderer: function (value, meta, record) {
          return (
            '<span ext:qtip="' +
            record.get("details") +
            '">' +
            value +
            "</span>"
          );
          return value;
        },

so I have in MODX 3 grid a mouse over Tooltip.

Great.

Greatings, Chris