function switchDiv(showDiv, hideDiv) {
	
	document.getElementById(hideDiv).style.display = "none";
	document.getElementById(showDiv).style.display = "block";
	
	document.getElementById(showDiv+'a').style.backgroundImage = "url(images/bg/actueel_active.png)";
	document.getElementById(hideDiv+'a').style.backgroundImage = "none";
	
}