If there is still only a blank area to the right, download the latest Java plugin (version 1.6 or above) for your browser:
Click and drag in the display area to rotate the tensegrity object. Click once to stop the rotation. Holding the Shift key while dragging rotates the camera, the mouse wheel moves it in or out
Select a different object in the drop-down menu (the default is a Tetrahedron). You may display the internal labels of the points where struts are joined with cords, the lengths and the tensions in the structure (negative values indicate compression).
Click and drag in the sliders to change the length of the cord (the dark rubber bands) between the corners of the figure in relation to the full length, to change the damping factor of the simulation (a kind of internal friction, determining how 'springy' the tensegrity object behaves), and to change the scale of the figure (i.e. to make it bigger or smaller).
The check boxes at the bottom turn relaxation on or off (i.e. the simulation of the forces shaping the tensegrity structure) and randomly pluck the struts (i.e. pull the sticks and then let them return to their original position).