function iWinOpen(n,ww,hh,bar,nwin) {
	if(hh > 550){
	var hh = screen.availHeight -150;
	}
var x = (screen.width - ww) / 2;
w=window.open(n,nwin,"menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=" +bar+",resizable=yes,width=" +ww+" ,height=" +hh)
w.window.moveTo(x,50);
w.focus();
}