function popup(FileName, winlgw, winlgh, winName){
	var scrWidth = window.screen.width
	var scrHeight = window.screen.height
	var winlgw, winlgh, lgwinprop, winName, getLeft = (scrWidth - winlgw)/2, getTop = (scrHeight - winlgh)/2
	lgwinprop = "'personalbar=no,toolbar=yes,location=no,scrollbars=yes,resizable=yes,width=" + winlgw + ",height=" + winlgh + ",left=" + getLeft + ",top=" + getTop + "'"
	newWindow = window.open(FileName, winName, lgwinprop)
}