function setDisplayDefault(sState) {
	//
	// Set defaults	
	// Top tabs
	if (sState != 'eventTabs') {
		document.getElementById('themeCapacities').style.display='none';
		document.getElementById('themeEuratom').style.display='none';
		document.getElementById('themeIdeas').style.display='none';
		document.getElementById('themeJRC').style.display='none';
		document.getElementById('themeNews').style.display='none';
		document.getElementById('themePeople').style.display='none';
	}	
	//
	// Event / News / Open call tabs
	if (sState != 'topTabs') {
		document.getElementById('eventsContent').style.display='none';
		document.getElementById('callsContent').style.display='none';
	}
}
function displayEvent(sState) {
	//
	// Turn off relevant tab set and kill default tab
	if (sState != 'topTabs') {
		setDisplayDefault('eventTabs');
		document.getElementById('newsContent').style.display='none';
	} else {
		setDisplayDefault('topTabs');
		document.getElementById('themeCooperation').style.display='none';
	}
}

function showNavItem(sItem,sTabSet) {
	//
	// Verify that the item is not already shown then show it
	if (document.getElementById([sItem]).style.display != 'block') {
		if (sTabSet != 'topTabs') {
			displayEvent('eventTabs');
		} else {
			displayEvent('topTabs');
		}
		//
		// Show correct tab		
		document.getElementById([sItem]).style.display='block';
	}
}