function setActiveTab(tabnumber)
			{
				switch(tabnumber)
				{
					case 1:
						document.getElementById("tab1").style.display = 'block';
						document.getElementById("tab2").style.display = 'none';
						document.getElementById("tab3").style.display = 'none';
					break;
					case 2:
						document.getElementById("tab2").style.display = 'block';
						document.getElementById("tab1").style.display = 'none';
						document.getElementById("tab3").style.display = 'none';
					break;
					case 3:
						document.getElementById("tab3").style.display = 'block';
						document.getElementById("tab1").style.display = 'none';
						document.getElementById("tab2").style.display = 'none';
					break;
				}
			}