var showList = false;

function changeView(el,aRef){

	if(showList == false)
	{	
		document.getElementById(el).style.display = "block";
		aRef.firstChild.data = "Referenzen ausblenden";
		aRef.style.backgroundColor = "#DDDDDD";
		showList = true;
	}
	else if(showList == true)
	{
		document.getElementById(el).style.display = "none";
	 	aRef.firstChild.data = "Referenzen anzeigen";
	 	aRef.style.backgroundColor = "#b4c6d9";
		showList = false;
	}
	else{}
}