Grid Cell Onclick Event

when I click a cell. I would like to raise the onclick event.
How can I raise the event on the grid control.

Also, I would like to know clicked cell value(data value).

More Detail :

I already use below object in my programming code.
<script>
var myHeaders = <%= aw_headers(oRecordset) %>
var myCells = <%= aw_cells(oRecordset) %>
var obj = new AW.UI.Grid;
obj.setId("myGrid");
obj.setHeaderText(myHeaders);
obj.setCellData(myCells);
</script>

myGrid.onControlClicked=function(event){alert(this.getCellText(this.getCurrentColumn(),this.getCurrentRow()));};