var win=null;
function NewWindow(mypage,myname,w,h,scroll){
	LeftPosition=(screen.width)?(screen.width-w)/2:0;
	TopPosition=(screen.height)?(screen.height-h)/2:0;
	settings=
		'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',resizable'
	win = window.open(mypage,myname,settings)
	}