defines the position and size of Sidemenu
webix.ui({
view: "sidemenu",
width: 200,
position: "left",
state:function(state){
// get the toolbar's height
var toolbarHeight = $$("toolbar").$height;
// increase the 'top' property
state.top = toolbarHeight;
// decrease the 'height' property
state.height -= toolbarHeight;
};
});