var demoWin=null;
function openDemo(w) {
if (demoWin != null)
	{
	if (demoWin.closed == false) {
		demoWin.close();
	}
	}
demoWin = window.open(w,'demo','width=400,height=560,screenX=0,screenY=0');
demoWin.focus();
}

function closeDemo(w) {
if (w != null) {
	if (w.closed == false) {
		w.close();
	}
      }
}