function win(url)
{
	var width = 710;
	var height = 545;
	var options = 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,dependent=0';
	var wleft = 50;
	var wtop = 50;
	if (parseInt(navigator.appVersion) >= 4 )
	{
		wleft = (screen.width - width) / 2;
		wtop = (screen.height - height) / 2;
	}
	var windowName = "popup" + new Date().getTime();
	options += ',' + 'width=' + width + ',height=' + height + ',left=' + wleft
+ ',top=' + wtop;
	var popup = window.open(url, windowName, options);
}