'*************************************   
'用户名检测   
'*************************************   
Function IsValidUserName(byVal UserName)   
    on error resume next   
    Dim i,c   
    Dim VUserName   
    IsValidUserName = True  
    For i = 1 To Len(UserName)   
        c = Lcase(Mid(UserName, i, 1))   
        If InStr("$!<>?#^%@~`&*();:+='""   ", c) > 0 Then  
                IsValidUserName = False  
                Exit Function  
        End IF   
    Next  
    For Each VUserName in Register_UserName   
        If UserName = VUserName Then  
            IsValidUserName = False  
            Exit For  
        End If  
    Next  
End Function  
  
'*************************************   
'检测是否有效的E-mail地址   
'*************************************   
Function IsValidEmail(Email)    
    Dim names, name, i, c   
    IsValidEmail = True  
    Names = Split(email, "@")   
    If UBound(names) <> 1 Then  
        IsValidEmail = False  
        Exit Function  
    End If  
    For Each name IN names   
        If Len(name) <= 0 Then  
            IsValidEmail = False  
            Exit Function  
        End If  
        For i = 1 to Len(name)   
            c = Lcase(Mid(name, i, 1))   
            If InStr("abcdefghijklmnopqrstuvwxyz_-.", c) <= 0 And Not IsNumeric(c) Then  
                IsValidEmail = false   
                Exit Function  
            End If  
        Next  
        If Left(name, 1) = "." or Right(name, 1) = "." Then  
            IsValidEmail = false   
            Exit Function  
        End If  
    Next  
    If InStr(names(1), ".") <= 0 Then  
        IsValidEmail = False  
        Exit Function  
    End If  
    i = Len(names(1)) - InStrRev(names(1), ".")   
    If i <> 2 And i <> 3 Then  
        IsValidEmail = False  
        Exit Function  
    End If  
    If InStr(email, "..") > 0 Then  
        IsValidEmail = False  
    End If  
End Function  
  
'*************************************   
'加亮关键字   
'*************************************   
Function highlight(byVal strContent,byRef arrayWords)   
    Dim intCounter,strTemp,intPos,intTagLength,intKeyWordLength,bUpdate   
    if len(arrayWords)<1 then highlight=strContent:exit function   
    For intPos = 1 to Len(strContent)   
        bUpdate = False  
        If Mid(strContent, intPos, 1) = "<" Then  
            On Error Resume Next  
            intTagLength = (InStr(intPos, strContent, ">", 1) - intPos)   
            if err then   
              highlight=strContent   
              err.clear   
            end if   
            strTemp = strTemp & Mid(strContent, intPos, intTagLength)   
            intPos = intPos + intTagLength   
        End If  
            If arrayWords <> "" Then  
                intKeyWordLength = Len(arrayWords)   
                If LCase(Mid(strContent, intPos, intKeyWordLength)) = LCase(arrayWords) Then  
                    strTemp = strTemp & "<span class=""high1"">" & Mid(strContent, intPos, intKeyWordLength) & "</span>"  
                    intPos = intPos + intKeyWordLength - 1   
                    bUpdate = True  
                End If  
            End If  
        If bUpdate = False Then  
            strTemp = strTemp & Mid(strContent, intPos, 1)   
        End If  
    Next  
    highlight = strTemp   
End Function