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RegReplace(str,regexStr,RepalceStr) 对str 进行正则替换

如：
htmlstr = "123<img src="http://www.ajaxstu.com/Files/File/2007-11/25/F81838A188DFD33KH1.gif""" border=""0"">45<b>6</b>"
htmlstr2 = RegReplace(htmlstr,"<(.[^><]*)>","")
返回 htmlstr2 为123456

Function RegReplace(Str,PatternStr,RepStr)
 Dim NewStr,regEx
 NewStr = Str
 if isnull(NewStr) then
  RegReplace = ""
  exit function
 end if
 Set regEx = New RegExp
 regEx.IgnoreCase = True
 regEx.Global = True
 regEx.Pattern=PatternStr
 NewStr = regEx.Replace(NewStr,RepStr)
 RegReplace = NewStr
end function