模仿PHP写的ASP分页

<%
' 分页程序
' total_records 总记录数
' everypage_records 每页显示条数
' current_page 当前页数
' url 要传递的url，这里可以含有要传递的变量，比如 "li***asp?" 或者"li***asp?keyword=key&"
' 程序调用比较简单，不过还是比PHP的麻烦，继续努力中

sub show_page(total_records,everypage_records,current_page,url)

 if IsNumeric (total_records) then
  total_records=Int(total_records)
 else
  total_records=0
 end if
 
 if IsNumeric (everypage_records) then
  everypage_records=Int(everypage_records)
  if everypage_records<=0 then
   everypage_records=10
  end if
 else
  everypage_records=10
 end if
 
 if IsNumeric (current_page) then
  current_page=Int(current_page)
 else
  current_page=1
 end if
 
 '取总页数，即最后一页
 if total_records mod everypage_records=0 then
  last_page=Int(total_records/everypage_records)
 else
  last_page=Int(total_records/everypage_records)+1
 end if
 
 '判断 current_page 是否符合标准,并附值给page
 if current_page>=last_page then
  page=last_page
 elseif current_page<=1 then
  page=1
 else
  page=current_page
 end if
 
 '上一页
 if page<=0 then
  prepg=0
 else
  prepg=page-1
 end if
 '下一页
 if page=last_page then
  nextpg=0
 else
  nextpg=page+1
 end if
 
 '本页开始记录
 firstcount=prepg*everypage_records
 '本页结束记录
 if nextpg>=1 then
  lastcount=(nextpg-1)*everypage_records
 else
  lastcount=total_records
 end if
 '开始分页导航条代码
 pagenav=""
 pagenav1=""
 pagenav=pagenav&"显示第"&firstcount&"-"&lastcount&"条记录 共"&total_records&" 条记录"
 pagenav1=pagenav1&"显示第"&firstcount&"-"&lastcount&"条记录 共"&total_records&" 条记录"
 
 if last_page>1 then
 '当有前后页时
 pagenav=pagenav&" 首页 "
 pagenav1=pagenav1&" 首页 "
 if prepg>=1 then
  pagenav=pagenav&" 前页 "
  pagenav1=pagenav1&" 前页 "
 else
  pagenav=pagenav&" 前页 "
  pagenav1=pagenav1&" 前页 "
 end if
 if nextpg>=1 then
  pagenav=pagenav&" 后页 "
  pagenav1=pagenav1&" 后页 "
 else
  pagenav=pagenav&" 后页 "
  pagenav1=pagenav1&" 后页 "
 end if
 pagenav=pagenav&" 尾页 "
 pagenav1=pagenav1&" 尾页 "
 
 pagenav=pagenav&"到第页"
 pagenav=pagenav&" 共 "&last_page&" 页"

 pagenav1=pagenav1&"到第页"
 pagenav1=pagenav1&" 共 "&last_page&" 页"
 end if

end sub
%>