Component cross-compatibility
You can add any other dhtmlx component as tabs content
tabbar=new dhtmlXTabBar("a_tabbar","top");
tabbar.setContent("a1","html_1");
tabbar.setContent("a2","html_2");
...
tree = new dhtmlXTreeObject('html_1','100%','100%',0);
...
grid = new dhtmlXGridObject('html_2');
...