ASP正则表达式解析出网址中的域名部分函数

<%
Function getDomain(domain)
    Dim re,ReturnStr,Matches
    Set re=new RegExp
    re.IgnoreCase =True
    re.Global=True
   
    re.Pattern = "(\w+\.(com.cn|net.cn|com|cn|net|org))"
    Set Matches = re.Execute(domain)
    ReturnStr = ""
    For Each Match in Matches
        ReturnStr = Match.Value
        Exit for
    Next
    getDomain = ReturnStr
    Set re=Nothing
End Function
response.write getDomain("http://myeducs.cn")
%>