YUI: DragDrop DataTable

Folder 1
Folder 2
Folder 3
Folder 4
Folder 5
Folder 6
Folder 7

The Code

(function() {
    var Dom = YAHOO.util.Dom,
        Event = YAHOO.util.Event,
        ddRow = null,
        overLi = null,
        selectedRow = null,
        thisStatus = Dom.get('status');

var myColumnHeaders = [
        {key:"SKU", sortable: true } ,
        {key:"Quantity", sortable: true },
        {key:"Item", sortable: true },
        {key:"Description",sortable: true }
    ];

var myColumnSet = new YAHOO.widget.ColumnSet(myColumnHeaders);
    var myDataSource = new YAHOO.util.DataSource(YAHOO.example.Data.inventory);
    myDataSource.responseType = YAHOO.util.DataSource.TYPE_JSARRAY;
    myDataSource.responseSchema = {
        fields: ["SKU","Quantity","Item","Description"]
    };

var myDataTable = new YAHOO.widget.DataTable("datatable", myColumnSet, myDataSource, { sortedBy:{ colKey: "Item", dir: "desc" }, rowSingleSelect: true });
    myDataTable.subscribe("cellMousedownEvent",myDataTable.onEventSelectRow);

var onRowSelect = function(ev) {
        
        thisStatus.innerHTML = '';
        var par = myDataTable.getTrEl(Event.getTarget(ev)); //The tr element
        selectedRow = myDataTable.getSelectedRows();
        ddRow = new YAHOO.util.DDProxy(par.id);
        ddRow.handleMouseDown(ev.event);

ddRow.onDragOver = function() {
            Dom.addClass(arguments[1], 'over');
            if (overLi && (overLi != arguments[1])) {
                Dom.removeClass(overLi, 'over');
            }
            overLi = arguments[1];
        }

ddRow.onDragOut = function() {
            Dom.removeClass(overLi, 'over');
        }

ddRow.onDragDrop = function(ev) {
            thisStatus.innerHTML = 'You dropped this row (' + selectedRow + ') on this li (' + Dom.get(overLi).innerHTML + ')';
            Dom.removeClass(overLi, 'over');
            myDataTable.unselectAllRows();
            YAHOO.util.DragDropMgr.stopDrag(ev,true);
            Dom.get(this.getDragEl()).style.visibility = 'hidden';
            Dom.setStyle(this.getEl(), 'position', 'static');
            Dom.setStyle(this.getEl(), 'top', '');
            Dom.setStyle(this.getEl(), 'left', '');
        }

};
    myDataTable.subscribe('cellMousedownEvent', onRowSelect);

var lis = Dom.get('folders').getElementsByTagName('li');
    for (var i = 0; i < lis.length; i++) {
        new YAHOO.util.DDTarget(lis[i]);
    }

})();