将全角的字符转变成半角字符，将半角转变成全角
<%
function dsconvert(vstring,vflag)
     rem vflag为0时表示从全角转为半角,为其他时表示从半角转为全角
     dim i,tmpsinglecharaasc,tempresult,sascstring,dascstring
     sascstring = "1,2,3,4,5,6,7,8,14,15,16,17,18,19,20,21,22,23,24,25,26,27,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,97,98,99,100,101,102,103,104,105,106,107,108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126"

     dascstring = "-23679,-23678,-23677,-23676,-23675,-23674,-23673,-23672,-23666,-23665,-23664,-23663,-23662,-23661,-23660,-23659,-23658,-23657,-23656,-23655,-23654,-23653,-23647,-23646,-23645,-23644,-23643,-23642,-23641,-23640,-23639,-23638,-23637,-23636,-23635,-23634,-23633,-23632,-23631,-23630,-23629,-23628,-23627,-23626,-23625,-23624,-23623,-23622,-23621,-23620,-23619,-23618,-23617,-23616,-23615,-23614,-23613,-23612,-23611,-23610,-23609,-23608,-23607,-23606,-23605,-23604,-23603,-23602,-23601,-23600,-23599,-23598,-23597,-23596,-23595,-23594,-23593,-23592,-23591,-23590,-23589,-23588,-23587,-23586,-23585,-23584,-23583,-23582,-23581,-23580,-23579,-23578,-23577,-23576,-23575,-23574,-23573,-23572,-23571,-23570,-23569,-23568,-23567,-23566,-23565,-23564,-23563,-23562,-23561,-23560,-23559,-23558,-23557,-23556,-23555,-23554"

     tempresult = ""
     if len(vstring) <= 0 then response.write "parameters error! please check your parameters!" : response.end : exit function
     for i=1 to len(vstring)
           tmpsinglecharaasc = asc(mid(vstring,i,1))
           if vflag = 0 then
                 if instr(dascstring,tmpsinglecharaasc) <> 0 and len(cstr(tmpsinglecharaasc)) = 6 then
                       tempresult = tempresult & chr(tmpsinglecharaasc+23680)
                 else
                       tempresult = tempresult & chr(tmpsinglecharaasc)
                 end if
           else
                 if instr(sascstring,tmpsinglecharaasc) <> 0 and len(cstr(tmpsinglecharaasc))<=4 then
                       tempresult = tempresult & chr(tmpsinglecharaasc-23680)
                 else
                       tempresult = tempresult & chr(tmpsinglecharaasc)
                 end if
           end if
     next
     dsconvert = tempresult
end function
%>
全角转半角
<%= dsconvert("１２３４５６６４６５４５４",0)%>
半角转全角
<%= dsconvert("1234567890132131",1)%>
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