图形计数器的代码 其中红色部分小弟看的不是很明白，希望有详细的解读
<%
function g_counts(counterfile)
dim objfso,objts,cpunts,strcounts
application.lock
set objfso=server.createobject("scripting.filesystemobject")
set objts=objfso.opentextfile(server.mappath(counterfile),1,true)
if not objts.atendofstream then
counts=clng(objts.readline)
end if
counts=counts+1
objts.close
set objts=objfso.opentextfile(server.mappath(counterfile),2,true)
objts.writeline(counts)
objts.close
application.unlock
strcounts=cstr(counts)
for i=1 to len(strcounts)
g_counts=g_counts&"<img src=image/shuzi"&mid(strcounts,i,1)&".jpg>"
next
end function
%>
<html>
<body>
<p><img src="top.jpg"></p>
你是第<% response.write g_counts("counter2.txt") %>位访客<br>
最后一次的浏览日期:<% response.write application("lastvisitdate")%>
<% application("lastvisitdate")=now() %>
</body>
</html>