function popUp(url){
	windowWidth=700;
	windowHeight=500;
	myleft=(screen.width)?(screen.width-windowWidth)/2:100;
	mytop=(screen.height)?(screen.height-windowHeight)/2:100;
	venter = window.open(url,'Woordenboek','width=' + windowWidth + ',height=' + windowHeight + ',scrollbars=yes,status=no,toolbar=no,location=no,menubar=no,left=' + myleft + ',top=' + mytop);
}
function popUpSmall(url){
	windowWidth=400;
	windowHeight=200;
	myleft=(screen.width)?(screen.width-windowWidth)/2:100;
	mytop=(screen.height)?(screen.height-windowHeight)/2:100;
	venter = window.open(url,'CMS','width=' + windowWidth + ',height=' + windowHeight + ',scrollbars=yes,status=no,toolbar=no,location=no,menubar=no,left=' + myleft + ',top=' + mytop);
}