public/javascripts/yui/datatable/datatable.js
function() {
    var elColgroup = this._elColgroup;
    if(elColgroup) {
        var elTable = elColgroup.parentNode;
        Ev.purgeElement(elColgroup, true);
        elTable.removeChild(elColgroup);
        this._elColgroup = null;
    }
}
function() {
    var elColgroup = this._elColgroup;
    if(elColgroup) {
        var elTable = elColgroup.parentNode;
        Ev.purgeElement(elColgroup, true);
        elTable.removeChild(elColgroup);
        this._elColgroup = null;
    }
}
function ( ) { var elColgroup = this . _elColgroup ; if ( elColgroup ) { var elTable = elColgroup . parentNode ; Ev . purgeElement ( elColgroup , true ) ; elTable . removeChild ( elColgroup ) ; this . _elColgroup = null ; } }
Destroy's the DataTable COLGROUP element, if available.

@method _destroyColgroupEl
@private
Destroy s the DataTable COLGROUP element if available .