// opens a new window and centers it on the screen
function winBRopen(theURL, Name, popW, popH, scroll, winResize) {
	var winleft = (screen.width - popW) / 2;
	var winUp = (screen.height - popH) / 2;
	winProp = 'width='+popW+',height='+popH+',left='+winleft+',top='+winUp+',scrollbars='+scroll+',resizable='+winResize+''
	Win = window.open(theURL, Name, winProp)
	if (parseInt(navigator.appVersion) >= 4) { 
		Win.window.focus(); 
	}
}