获取汉字拼音的第一个字母

<script language="vbs" src="spellcode.vbs"></script>

'获取客户简称的拼音缩写
            function getpy()
                dim str
                dim i
                str=document.all.txtContactName.value
                dim ret
                for i=1 to len(str)
                    ret=ret&getpychar(mid(str,i,1))
                next
                document.all.txtSpellCode.value=ret
        end function
    getpychar=char
    end if
end function
spellCode.vbs

'获取汉字拼音第一字母
function getpychar(char)
    dim tmp
    tmp=65536+asc(char)
    if(tmp>=45217 and tmp<=45252) then 
    getpychar= "A"
    elseif(tmp>=45253 and tmp<=45760) then
    getpychar= "B"
    elseif(tmp>=45761 and tmp<=46317) then
    getpychar= "C"
    elseif(tmp>=46318 and tmp<=46825) then
    getpychar= "D"
    elseif(tmp>=46826 and tmp<=47009) then 
    getpychar= "E"
    elseif(tmp>=47010 and tmp<=47296) then 
    getpychar= "F"
    elseif(tmp>=47297 and tmp<=47613) then 
    getpychar= "G"
    elseif(tmp>=47614 and tmp<=48118) then
    getpychar= "H"
    elseif(tmp>=48119 and tmp<=49061) then
    getpychar= "J"
    elseif(tmp>=49062 and tmp<=49323) then 
    getpychar= "K"
    elseif(tmp>=49324 and tmp<=49895) then 
    getpychar= "L"
    elseif(tmp>=49896 and tmp<=50370) then 
    getpychar= "M"
    elseif(tmp>=50371 and tmp<=50613) then 
    getpychar= "N"
    elseif(tmp>=50614 and tmp<=50621) then 
    getpychar= "O"
    elseif(tmp>=50622 and tmp<=50905) then
    getpychar= "P"
    elseif(tmp>=50906 and tmp<=51386) then 
    getpychar= "Q"
    elseif(tmp>=51387 and tmp<=51445) then 
    getpychar= "R"
    elseif(tmp>=51446 and tmp<=52217) then 
    getpychar= "S"
    elseif(tmp>=52218 and tmp<=52697) then 
    getpychar= "T"
    elseif(tmp>=52698 and tmp<=52979) then 
    getpychar= "W"
    elseif(tmp>=52980 and tmp<=53688) then 
    getpychar= "X"
    elseif(tmp>=53689 and tmp<=54480) then 
    getpychar= "Y"
    elseif(tmp>=54481 and tmp<=62289) then
    getpychar= "Z"
    else '如果不是中文，则不处理
    getpychar=char
    end if
end function