使表格的标题列可左右拉伸jquery插件封装

                        if (leftside) {
                            cobjs._currentObj = _this.prev();
                        }
                        else {
                            cobjs._currentObj = _this;
                        }
                    }
                }
                else {
                    cobjs._currentObj = null;
                }
            });
            ths.mouseout(function (e) {
                if (!cobjs._currentLeft) {
                    cobjs._currentObj = null;
                    _document.css(“cursor”, “auto”);
                }
            });
            _document.mousedown(function (e) {
                if (cobjs._currentObj) {
                    cobjs._currentLeft = e.clientX;
                }
                else {
                    cobjs._currentLeft = null;