imgbutton1 = new Image;
			imgbutton1.src = "img/button/button1.gif";
			imgbutton1over = new Image;
			imgbutton1over.src = "img/button/button1a.gif";
			
			imgbutton2 = new Image;
			imgbutton2.src = "img/button/button2.gif";
			imgbutton2over = new Image;
			imgbutton2over.src = "img/button/button2a.gif";
			
			imgbutton3 = new Image;
			imgbutton3.src = "img/button/button3.gif";
			imgbutton3over = new Image;
			imgbutton3over.src = "img/button/button3a.gif";
			
			imgbutton4 = new Image;
			imgbutton4.src = "img/button/button4.gif";
			imgbutton4over = new Image;
			imgbutton4over.src = "img/button/button4a.gif";
			
			imgbutton5 = new Image;
			imgbutton5.src = "img/button/button5.gif";
			imgbutton5over = new Image;
			imgbutton5over.src = "img/button/button5a.gif";
			
			imgbutton6 = new Image;
			imgbutton6.src = "img/button/button6.gif";
			imgbutton6over = new Image;
			imgbutton6over.src = "img/button/button6a.gif";
			
			imgbutton7 = new Image;
			imgbutton7.src = "img/button/button7.gif";
			imgbutton7over = new Image;
			imgbutton7over.src = "img/button/button7a.gif";
			
			imgbutton8 = new Image;
			imgbutton8.src = "img/button/button8.gif";
			imgbutton8over = new Image;
			imgbutton8over.src = "img/button/button8a.gif";
			
			imgbutton9 = new Image;
			imgbutton9.src = "img/button/button9.gif";
			imgbutton9over = new Image;
			imgbutton9over.src = "img/button/button9a.gif";
		
		
	var windowName ='';
			
	function NieuwVensterE(URL) {

 		if(false == windowName.closed) {
    		windowName.close ();
 		}
 		
		windowName = window.open(URL, "nieuw", "width=550,height=500");			
		windowName.focus();
		
	}
	
	var windowName2 ='';
	
	function NieuwVensterLarge(URL) {

 		if(false == windowName2.closed) {
    		windowName2.close ();
 		}
 		
		windowName2 = window.open(URL, "nieuw", "width=800,height=650");			
		windowName2.focus();
		
	}