var numberTabs = 3;			//change this if more than 2 tabs

	function show(item) {
		for (var i = 1; i <= numberTabs; i++) {
			document.getElementById("container" + i).style.display = "none";
			document.getElementById("tab" + i).className = "";
		}

		//set the active one now
		document.getElementById("container" + item).style.display = "block";
		document.getElementById("tab" + item).className = "active";

	}