让我头大的问题

<%if page=1 and not page=pagecount then%>
            <div align="right">第<%=page%>页&nbsp;&nbsp;<%for i=1 to pagecount%>
            <a   href="list.asp?page=<%=i%>"><%=i%></a>&nbsp;<%next%><a   href="list.asp?page=<%=page+1%>">下一页</a>&nbsp;&nbsp;</div>
             <%elseif page=pagecount and not page=1 then%>
            <div align="right">第<%=page%>页&nbsp;&nbsp;<%for i=1 to pagecount%>
            <a   href="list.asp?page=<%=i%>"><%=i%></a>&nbsp;<%next%><a   href="list.asp?page=<%=page-1%>">上一页</a>&nbsp;&nbsp;</div>
            <%elseif page<1 then%><div class="font" align="right"><font color=red>没有任何记录！</font></div>
            <%elseif page>pagecount then%><div class="font" align="right"><font color=red>没有任何记录！</font></div>
             <%elseif page=1 and page=pagecount then%>
            <%else%>
            <div align="right">第<%=page%>页&nbsp;&nbsp;<%for i=1 to pagecount%>
            <a   href="list.asp?page=<%=i%>"><%=i%></a>&nbsp;<%next%><a   href="list.asp?page=<%=page-1%>">上一页</a>
              <a   href="list.asp?page=<%=page+1%>">下一页</a>&nbsp;&nbsp;</div>
            <%end if%>


哪位高手帮我解释下每行的意思，还有我搞不清楚这个page是从哪冒出来的。谢谢！