zk.afterLoad('zul.mesh', function() {
	var xMeshWidget = {};
	zk.override(zul.mesh.MeshWidget.prototype, xMeshWidget, {
		_calcMinWds : function() {
			var result = xMeshWidget._calcMinWds.apply(this, arguments);//call original method
			var zHead = this.getHeadWidget();
			if(zHead) {
				for(var colIndex = 0; colIndex < zHead.nChildren; colIndex++) {
					if(!zHead.getChildAt(colIndex).isVisible()) {
						result.wds[colIndex] = 0; //intended side effect to same array stored to this._minWd.wds (in original method)					
					} 
				}
			}
			return result;
		}
	});//zk.override
});//zk.afterLoad