<%
function isabc(str)
for i=1 to len(str)
tempstr=asc(mid(str,i,1))
if (tempstr>64 and tempstr<91) or (tempstr>96 and tempstr<123) then '有大写和小写之
isabc=true
else
isabc=false
exit for
endif
next
end function
if isabc("abcsldjflaj2j34j") then
response.write "是"
else
response.write "否"
end if
%>
for i=1 to len(str)
if (asc(mid(str,i,1))>=65 and asc(mid(str,i,1))<=90) or (asc(mid(str,i,1))>=97 and asc(mid(str,i,1))<=122) then
response.write str
endif
next