请高手解释一下代码

Function C_skin_pro(str)

If IsEmpty(str) Then
Exit Function
End If

dim str1
str1 = C_skin_tags(c_skin_56770(c_skin_word(skin_footer)))

If instr(str1,"56770 Eshop")> 0 Then
C_skin_pro = str
Else
conn.close
set Conn = nothing
response.redirect"http://www.wqshnet.cn"
response.End
End If

End Function

整理下代码,你应该看得明白了