function NewWindow(mypage, myname, w, h, tool, scroll) {
var winl = (screen.width - w) / 2;
var wint = (screen.height - h) / 2;
var wintt = wint / 2;
var winttt = wint - wintt;
winprops = 'height='+h+',width='+w+',top='+winttt+',left='+winl+',scrollbars='+scroll+',resizable=0,toolbar='+tool+',location=0,statusbar=0,menubar=0';
win = window.open(mypage, myname, winprops);
}