resplit: function(newPosition) {
newPosition = Math.max(0, Math.min(newPosition, this.element.width() - this._splitbarWidth));
this.splitbar.css('left', newPosition);
resplit: function(newPosition) {
newPosition = Math.max(0, Math.min(newPosition, this.element.width() - this._splitbarWidth));
this.splitbar.css('left', newPosition);