循环输出一行多列的列表的算法

<table width="100%"  border="1" cellspacing="0" cellpadding="6" style="border-collapse:collapse" align="center" bordercolor="#B8E4ED">
							<tr>
							<%
							    i = 0
								do while not rsCatalog.eof 
								 	for j=1 to 3
										if not rsCatalog.eof  then
											response.Write("<td width='50%'><a href ='ShowChapterContent.asp?id="&rsCatalog("id")&"'>"&rsCatalog("chapterName")&"</a></td>")
										else
											response.Write("<td></td>")
										end if
										rsCatalog.movenext
										i=i+1
									next 
									if i mod 3 =0 then
										response.Write("</tr><tr>") 
									end if 
								loop
							%>
							</tr>
							</table>

循环的次数即是列数