function equaliseHeight(sElement1,sElement2)
			{
				oElement1 = document.getElementById(sElement1)
				oElement2 = document.getElementById(sElement2)
				if (oElement1.offsetHeight > oElement2.offsetHeight) 
				{
					document.getElementById('chalkboard-footer').style.height = oElement1.offsetHeight - oElement2.offsetHeight + 73 + 'px';
					oElement2.style.height = oElement1.offsetHeight - 0 + 'px';
				}
				else
				{
					oElement1.style.height = oElement2.offsetHeight - 14 + 'px';
				}
			}