function tabChange(tabNo) {
	var i;
	var tabCount = 2;
	for (i = 1; i <= tabCount; i++) {
		document.getElementById("tabsel" + i).className = "tab_selector";
		document.getElementById("tab" + i).className = "noshow";
	}

	document.getElementById("tabsel" + tabNo).className="tab_selector selected";
	document.getElementById("tab" + tabNo).className="tab";
}