function openWindow(url)
{
		openwin = this.open(url,"ctrlwindow","width=300,height=260,toolbar=no,scrollbars=no,resizable=no");
		openwin.focus();
}
function openMailinglist(id)
{
	var url = '/nieuwsbrief.php?id='+id;
	openwin = this.open(url,"ctrlwindow","width=810,height=500,toolbar=no,scrollbars=yes,resizable=no");
	openwin.focus();
}

function swapImage(myID)
{
   var strOver  = "_over";
     var strOver  = "_down";
   var strOff = "_up";

	if(typeof myID != 'object')
		var oImg = document.getElementById(myID);
	else
		var oImg = myID;
   
   var currImg = oImg.src;

   if (currImg.indexOf(strOver) != -1)
      oImg.src = currImg.replace(strOver,strOff)
   else
      oImg.src = currImg.replace(strOff,strOver)
}