通过安全字符串过滤非法字符

<%
' ============================================
' 通用安全字符串输入,彻底替换server.htmlencode
' ============================================
Function HTMLEncode(Str)
 If Isnull(Str) Then
	 HTMLEncode = ""
	 Exit Function 
 End If
 Str = Replace(Str,Chr(0),"", 1, -1, 1)
 Str = Replace(Str, """", """, 1, -1, 1)
 Str = Replace(Str,"<","<", 1, -1, 1)
 Str = Replace(Str,">",">", 1, -1, 1) 
 Str = Replace(Str, "script", "script", 1, -1, 0)
 Str = Replace(Str, "SCRIPT", "SCRIPT", 1, -1, 0)
 Str = Replace(Str, "Script", "Script", 1, -1, 0)
 Str = Replace(Str, "script", "Script", 1, -1, 1)
 Str = Replace(Str, "object", "object", 1, -1, 0)
 Str = Replace(Str, "OBJECT", "OBJECT", 1, -1, 0)
 Str = Replace(Str, "Object", "Object", 1, -1, 0)
 Str = Replace(Str, "object", "Object", 1, -1, 1)
 Str = Replace(Str, "applet", "applet", 1, -1, 0)
 Str = Replace(Str, "APPLET", "APPLET", 1, -1, 0)
 Str = Replace(Str, "Applet", "Applet", 1, -1, 0)
 Str = Replace(Str, "applet", "Applet", 1, -1, 1)
 Str = Replace(Str, "[", "[")
 Str = Replace(Str, "]", "]")
 Str = Replace(Str, """", "", 1, -1, 1)
 Str = Replace(Str, "=", "=", 1, -1, 1)
 Str = Replace(Str, "'", "''", 1, -1, 1)
 Str = Replace(Str, "select", "select", 1, -1, 1)
 Str = Replace(Str, "execute", "&#101xecute", 1, -1, 1)
 Str = Replace(Str, "exec", "&#101xec", 1, -1, 1)
 Str = Replace(Str, "join", "join", 1, -1, 1)
 Str = Replace(Str, "union", "union", 1, -1, 1)
 Str = Replace(Str, "where", "where", 1, -1, 1)
 Str = Replace(Str, "insert", "insert", 1, -1, 1)
 Str = Replace(Str, "delete", "delete", 1, -1, 1)
 Str = Replace(Str, "update", "update", 1, -1, 1)
 Str = Replace(Str, "like", "like", 1, -1, 1)
 Str = Replace(Str, "drop", "drop", 1, -1, 1)
 Str = Replace(Str, "create", "create", 1, -1, 1)
 Str = Replace(Str, "rename", "rename", 1, -1, 1)
 Str = Replace(Str, "count", "count", 1, -1, 1)
 Str = Replace(Str, "chr", "chr", 1, -1, 1)
 Str = Replace(Str, "mid", "mid", 1, -1, 1)
 Str = Replace(Str, "truncate", "truncate", 1, -1, 1)
 Str = Replace(Str, "nchar", "nchar", 1, -1, 1)
 Str = Replace(Str, "char", "char", 1, -1, 1)
 Str = Replace(Str, "alter", "alter", 1, -1, 1)
 Str = Replace(Str, "cast", "cast", 1, -1, 1)
 Str = Replace(Str, "exists", "exists", 1, -1, 1)
 Str = Replace(Str,Chr(13),"<br>", 1, -1, 1)
 HTMLEncode = Replace(Str,"'","''", 1, -1, 1)
End Function
%>