function popIt(pagina, iHoogte, iBreedte) {
	
	var sPosX;
	var sPosY;
		
	sPosX		= (screen.width / 2) - (iBreedte / 2);
	sPosY		= (screen.height / 2) - (iHoogte / 2);
	
	window.open(pagina, '', "toolbar=no, location=no, status=no, directories=no, menubar=no, resizable=no, top="+sPosY+", left="+sPosX+", width="+iBreedte+", height="+iHoogte+", scrollbars=auto");
	
}