function openWindow(url) {
  popupWin = window.open(url,'new_page','width=600,height=330,scrollbars=no')
}

function NewWindow(mypage, myname, w, h, scroll) {
var winl = (screen.width - w) / 4;
var wint = (screen.height - h) / 4;
winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+scroll+',resizable'
win = window.open(mypage, myname, winprops)
if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}