ASP截取字数（二）

function StrLeft(Str,StrLen)
  dim L,T,I,C
  if Str="" then
    StrLeft=""
    exit function
  end if
  Str=Replace(Replace(Replace(Replace(Str,"&nbsp;"," "),"&quot;",Chr(34)),"&gt;",">"),"&lt;","<")
  L=Len(Str)
  T=0
  for i=1 to L
    C=Abs(AscW(Mid(Str,i,1)))
    if C>255 then
      T=T+2
    else
      T=T+1
    end if
    if T>=StrLen then
      StrLeft=Left(Str,i) & "…"
      exit for
    else
      StrLeft=Str
    end if
  next
  StrLeft=Replace(Replace(Replace(replace(StrLeft," ","&nbsp;"),Chr(34),"&quot;"),">","&gt;"),"<","&lt;")
end function