function centerpop(theURL, Name, winW, winH, scroll) { // V 1.0
	var winleft = (screen.width - winW) / 2;
	var winUp = (screen.height - winH) / 2;
	windowProp = 'width='+winW+',height='+winH+',left='+winleft+',top='+winUp+',scrollbars='+scroll+',resizable'
	Win = window.open(theURL, Name, windowProp)
	if (parseInt(navigator.appVersion) >= 4) { Win.window.focus(); }
}