If len(str)<=n/2 Then
LeftTrue=str
Else
Dim TStr
Dim l,t,c
Dim i
l=len(str)
t=l
TStr=""
t=0
for i=1 to l
c=asc(mid(str,i,1))
If c<0 then c=c+65536
If c>255 then
t=t+2
Else
t=t+1
End If
If t>n Then exit for
TStr=TStr&(mid(str,i,1))
next
LeftTrue = TStr
End If