<SCRIPT LANGUAGE="VBSCRIPT" RUNAT="SERVER">
Function Highlight(strText, strFind, strBefore, strAfter)
  Dim nPos
  Dim nLen
  Dim nLenAll

  nLen = Len(strFind)
  nLenAll = nLen + Len(strBefore) + Len(strAfter) + 1

  Highlight = strText

  If nLen > 0 And Len(Highlight) > 0 Then
    nPos = InStr(1, Highlight, strFind, 1)
    Do While nPos > 0
      Highlight = Left(Highlight, nPos - 1) & _
        strBefore & Mid(Highlight, nPos, nLen) & strAfter &_
         Mid(Highlight, nPos + nLen)

      nPos = InStr(nPos + nLenAll, Highlight, strFind, 1)
    Loop
  End If
End Function
</SCRIPT>
<%
'OPTION EXPLICIT
Dim strText, strFind

strFind=keyword
strText=RS("text_data")
strText= Highlight(strText, strFind,"<b>", "</b>")

Response.Write strText
%>