asp只采集网站可见文本的正则

 
我写的是这样:
Function ClearHTMLCode(originCode)
Dim reg
set reg = new RegExp
reg.IgnoreCase = True
reg.Global = True
reg.Pattern = "()"
originCode= reg.Replace(originCode, "")
reg.Pattern = "()"
originCode= reg.Replace(originCode, "")
reg.Pattern = "<[^>]*>"
originCode= reg.Replace(originCode, "")
ClearHTMLCode = originCode
End Function

不过有一些过滤不了！而且速度太慢！