function PopupWin(pagefile,winname,w,h,scroller)
{ 
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+'resizable=0,scrollbars='+scroller;
	window.open(pagefile,winname,winprops);
}