选择最快的服务器访问

< script >
i = 1
var autourl = new  Array()
autourl[ 1 ] = " http://bbs.hidotnet.com "
autourl[ 2 ] = " http://anf.hidotnet.com "
function choose(url)
... {
  if(i)...{top.location=url;i=0}
}
function run()
... {
  for(var i=1;i<autourl.length;i++)
  document.write("<img src="+autourl[i]+" width=1 height=1 onerror=choose('"+autourl[i]+"')>")
}
run()
</ script >