function showHideAktuell(){
	var cmdCollapse = document.getElementById('cmdCollapse');
	var aktuellFrame = document.getElementById('indexAktuell');
	var welcomeFrame = document.getElementById('indexAktuellIn');
	
	var collapse = Array();
	collapse[true] = 'none';
	collapse[false] = 'block';
			
	var doCollapse = (cmdCollapse.style.visibility != 'hidden');
	cmdCollapse.style.visibility =  doCollapse ? 'hidden' : 'visible';
	aktuellFrame.style.display = collapse[doCollapse];
	welcomeFrame.style.display = collapse[!doCollapse];
}

function showCollapseButton(){
	var cmdCollapse = document.getElementById('cmdCollapse');
	cmdCollapse.style.visibility = 'visible';
}