function NewWindow(url, windowName, w, h, scroll, resize) {
	var winl=(screen.width - w)/2;
	var wint=(screen.height - h)/2;
	winprops='height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable='+resize+'';
	win=window.open(url, windowName, winprops);
	if (parseInt(navigator.appVersion)>=4) {
		win.window.focus()
	}
}