ASP 正则函数替换分页后的参数

Function DRexPage(Str)
Dim RegEx
If IsNull(Str) Or Str="" Then Exit Function
Set RegEx=New RegExp
RegEx.IgnoreCase=True
RegEx.pattern="(\&)?page=(\d)+"
DRexPage=regEx.replace(Str,"") '(Str,"$1")
Set RegEx=Nothing
End Function