function openwin(u,x,y) {
  var wintext=''
  if (!x) x=660
  if (!y) y=500
  if (y>screen.availHeight) {
    y=screen.availHeight-28
    wintext='scrollbars,'
    x+=15
  }
  if (x>screen.availWidth) {
    x=screen.availWidth-12
    wintext='scrollbars,'
  }
  wintext+="toolbar=0,width="+x+",height="+y
  newWin=open(u,'mapWin',wintext)
  newWin.resizeTo(x+12,y+28)
  setTimeout('newWin.focus()',500)
  return false
}