function openclose(idNum)
			{
				// Close all but the current video by default
				for(var i=1; i<=7; i++)
				{
					var c = document.getElementById("v" + i + "Content");
					var b = document.getElementById("v" + i + "Button");

					if (i != idNum && c != null && c.style.display != 'none')
					{
						c.style.display = 'none';
						b.src = b.src.replace("collapse", "expand");
					}
				}

				// Get the current video content and check its display style
				var vc = document.getElementById("v" + idNum + "Content");
				var vb = document.getElementById("v" + idNum + "Button");

				if (vc.style.display == 'none')				{
					// Expand
					vc.style.display = 'block';
					vb.src = vb.src.replace("expand", "collapse");	
				}
				else
				{
					// Collapse8					
					vc.style.display = 'none';
					vb.src = vb.src.replace("collapse", "expand");					
				}

				return false;
			}