function winOpen (address) {
	var nLeft = (screen.width-1020)/2;
	var nTop = (screen.height-729)/2;
	win = window.open(address, "Main", "width=1020,height=729,left=" + nLeft + ",top=" + nTop +
		",location=no,menubar=no,resizable=no,scrollbars=no,status=no,toolbar=no");
	win.focus();
}