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