How to delete a row in dojo EnhancedGrid using row index not by using selection

Trying to find an answer to remove a row for dojo EnhancedGrid based on the row index.

Please find the EnhancedGrid.

    var dataStore = new ObjectStore({objectStore: objectStoreMemory});
    // grid
    grid = new EnhancedGrid({
    selectable: true,
    store: dataStore,
    structure : [ {
        name : "Country",
        field : "Country",
        width : "150px",
        reorderable: false,
        editable : true
    }, {
        name : "Abbreviation",
        field : "Abbreviation",
        width : "120px",
        reorderable: false,
        editable : true
    }, {
        name : "Capital",
        field : "Capital",
        width : "100%",
        reorderable: false,
        editable : true
    }, {
        label: "", 
        field: "Delete",
        formatter: deleteButton
    }],
    rowSelector: '20px',
    plugins: {
        pagination: {
            pageSizes: ["10", "25", "50", "100"],
            description: true,
            sizeSwitch: true,
            pageStepper: true,
            gotoButton: true,
            maxPageStep: 5,
            position: "bottom"
        }
    }
    }, "grid");
    grid.startup();

And the Delete Button Script is here:

function deleteButton(id) {
    var dBtn1 = "<div data-dojo-type='dijit/form/Button'>";
    var dBtn2 = "<img src='delete.png' onclick='javascript:removeItem()' alt='" + id + "'";
    dBtn = dBtn1 + dBtn2 + " width='18' height='18'></div>";
    return dBtn;
}

Here is my Question: Each row will have a delete button at the end, On click of this button the same row should be deleted.

Can anybody tell me how to delete a row based on row index?

Here is the solution. The sequence of methods that will run onClick of a button are removeItem() and onRowClick event

1> Set the "deleteButtonFlag" on click of a button.

function removeItem() {
        deleteButtonGFlag = true;
}

2> Remove item

dojo.connect(grid, "onRowClick", function(e) {
    if (deleteButtonGFlag) {
        dataStore.fetch({
            query: {},
            onComplete: function(items) {
                var item = items[e.rowIndex];
                dataStore.deleteItem(item);
                dataStore.save();
                deleteButtonGFlag = false;
            }
        });
    }
});