var activeTab = 1;
		function openTab(tabId) {
			// reset old tab and content
			document.getElementById("tabLink"+activeTab).className = "tabLink";
			document.getElementById("tabContent"+activeTab).className = "tabContent";
			// set new tab and content
			document.getElementById("tabLink"+tabId).className = "tabLinkActive";
			document.getElementById("tabContent"+tabId).className = "tabContentActive";
			activeTab = tabId;
		}