function new_str(str)
if instr(str,chr(34))<>0 and str<>"" then
str_split=split(str,chr(34))
i=1
str_s=""
for j=0 to ubound(str_split)-1
if i mod 2 then
str_s=str_s&str_split(j)&"“"&str_split(j+1)
else
str_s=str_s&str_split(j)&"”"&str_split(j+1)
end if
i=i+1
next
end function