给SUPESITE加字母索引

请教大侠们，怎么给SUPESITE加个按字母索引的功能呢。。
我找到GBK的PHP方法，但不会整合进来。请那位大位给点提示了。

<%
function getpychar(char)
dim tmpp:tmpp=65536+asc(char)
if(tmpp>=45217 and tmpp<=45252) then
getpychar= "A"
elseif(tmpp>=45253 and tmpp<=45760) then
getpychar= "B"
elseif(tmpp>=45761 and tmpp<=46317) then
getpychar= "C"
elseif(tmpp>=46318 and tmpp<=46825) then
getpychar= "D"
elseif(tmpp>=46826 and tmpp<=47009) then
getpychar= "E"
elseif(tmpp>=47010 and tmpp<=47296) then
getpychar= "F"
elseif(tmpp>=47297 and tmpp<=47613) then
getpychar= "G"
elseif(tmpp>=47614 and tmpp<=48118) then
getpychar= "H"
elseif(tmpp>=48119 and tmpp<=49061) then
getpychar= "J"
elseif(tmpp>=49062 and tmpp<=49323) then
getpychar= "K"
elseif(tmpp>=49324 and tmpp<=49895) then
getpychar= "L"
elseif(tmpp>=49896 and tmpp<=50370) then
getpychar= "M"
elseif(tmpp>=50371 and tmpp<=50613) then
getpychar= "N"
elseif(tmpp>=50614 and tmpp<=50621) then
getpychar= "O"
elseif(tmpp>=50622 and tmpp<=50905) then
getpychar= "P"
elseif(tmpp>=50906 and tmpp<=51386) then
getpychar= "Q"
elseif(tmpp>=51387 and tmpp<=51445) then
getpychar= "R"
elseif(tmpp>=51446 and tmpp<=52217) then
getpychar= "S"
elseif(tmpp>=52218 and tmpp<=52697) then
getpychar= "T"
elseif(tmpp>=52698 and tmpp<=52979) then
getpychar= "W"
elseif(tmpp>=52980 and tmpp<=53640) then
getpychar= "X"
elseif(tmpp>=53689 and tmpp<=54480) then
getpychar= "Y"
elseif(tmpp>=54481 and tmpp<=62289) then
getpychar= "Z"
else '如果不是中文，则不处理
getpychar=char
end if
end function
'//生成汉字串首字母串
function getpy(str)
'for i=1 to len(str)
'getpy=getpy & getpychar(mid(str,i,1))
getpy=getpychar(mid(str,1,1))
'next
end function
%>
getpy(str)'str是数据库里的查询得到的数据值
getpy(str)=A 那么就是符合条件的