var lastTabItem = null;
var lastTabContent = null;

addLoadEvent(initTabs);

function selectTab(tabItem, tabContentId) {
	setClass(lastTabItem, null);
	setClass(lastTabContent, "tabcontent hiddenitem");

	var tabContent = document.getElementById(tabContentId);
	setClass(tabItem, "selected");
	setClass(tabContent, "tabcontent visibleitem");
	
	lastTabItem = tabItem;
	lastTabContent = tabContent;
}

function setClass(item, classname) {
	if (item)
		item.className = classname;
}

function initTabs() {
	lastTabItem = document.getElementById('tabItem2');
	lastTabContent = document.getElementById('tabContent2');
	if (lastTabItem)
		setClass(lastTabItem, "selected");
	if (lastTabContent)
		setClass(lastTabContent, "tabcontent visibleitem");
}