if(document.images)
{
	button1On=new Image();
	button1On.src="btn_randonneur_on.gif";
	button2On=new Image();
	button2On.src="btn_tandems_on.gif";
	button3On=new Image();
	button3On.src="btn_brompton_on.gif";
	button4On=new Image();
	button4On.src="btn_brooks_on.gif";
	button5On=new Image();
	button5On.src="btn_fietsvakantie_on.gif";
	button6On=new Image();
	button6On.src="btn_bagagetransport_on.gif";
	button7On=new Image();
	button7On.src="btn_techadvies_on.gif";
	button8On=new Image();
	button8On.src="btn_winkel_on.gif";

	button1Off=new Image();
	button1Off.src="btn_randonneur_off.gif";
	button2Off=new Image();
	button2Off.src="btn_tandems_off.gif";
	button3Off=new Image();
	button3Off.src="btn_brompton_off.gif";
	button4Off=new Image();
	button4Off.src="btn_brooks_off.gif";
	button5Off=new Image();
	button5Off.src="btn_fietsvakantie_off.gif";
	button6Off=new Image();
	button6Off.src="btn_bagagetransport_off.gif";
	button7Off=new Image();
	button7Off.src="btn_techadvies_off.gif";
	button8Off=new Image();
	button8Off.src="btn_winkel_off.gif";
}
function img_act(imgName)
{
if(document.images)
{document[imgName].src=eval(imgName + 'On.src');
}}
function img_inact(imgName)
{
if(document.images)
{document[imgName].src=eval(imgName + 'Off.src');
}}