function openwin(url)
{
	var iLeft;
	var iWidth=700;
	var iHeight=400;
	
	if(window.outerWidth)
		iLeft = window.screenX + ((window.outerWidth - iWidth) / 2);
	else
		iLeft = Math.round((screen.availwidth - iWidth)/2) - 8;

	var iTop = Math.round((screen.availHeight - iHeight)/2) - 8;

	window.open(url, 'win', 'resizable=yes,scrollbars=yes,left=' + iLeft + ',top=' + iTop + ',height=' + iHeight + ',width=' + iWidth);
}