// JavaScript Document

imgwin=false
function popup (target,w,h) {
	if (imgwin){imgwin.close()}
	param = 'toolbar=no,menubar=no,location=no,resizable=no,scrollbars=no';
	param = param+',height='+h+',width='+w;
	x = (screen.availWidth - w) / 2;
    y = (screen.availHeight - h) / 2
	imgwin=window.open(target,'imgwin',param);
	imgwin.moveTo(x, y);
	imgwin.focus()				
}