var win = null;
function okno(mypage,w,h)
{
	LeftPosition = (screen.width) ? (screen.width-w)/2 : 0;
	TopPosition = (screen.height) ? (screen.height-h)/2 : 0;
	settings ="height="+h+",width="+w+",top="+TopPosition+",left="+LeftPosition+",toolbar=0, location=0, directories=0, status=1, border=0, scrollbars=1, menubar=0, resizable=1";
	win = window.open(mypage,"okno",settings); 
	win.focus();
}