var txt = new Array();
txt[0]="<a href='/sqlbrd_sqlbrd_cfgwhats.html' title='自動連絡掲示板'><img src='/images/sample/btnauto.gif' border='0'></a>";
txt[1]="<a href='/sqlbrd_sqlbrd_cfgmsgbrd.html' title='連絡メッセージ'><img src='/images/sample/btnmsg.gif' border='0'></a>";
txt[2]="<a href='/sqlbrd1_sqlbrd_cfghpmake.html'  title='ＨＰ作成質問箱'><img src='/images/sample/btnhpm.gif' border='0'></a>";
txt[3]="<a href='/sqlbrd_sqlbrd_cfgguest.html' title='あしあと掲示板'><img src='/images/sample/btnasi.gif' border='0'></a>";
txt[4]="<a href='/sqlbrd_sqlbrd_cfgwaiwai.html' title='わいわい掲示板'><img src='/images/sample/btnwai.gif' border='0'></a>";
txt[5]="<a href='/tool_imagebbs_' title='お絵かき掲示板'><img src='/images/sample/btnoek.gif' border='0'></a>";
txt[6]="<a href='/sqlbrd1_sqlbrd_cfglnkbrd.html'  title='総合リンク集'><img src='/images/sample/btnlnk.gif' border='0'></a>";

mmax = 7; //メッセージ行数
txtno = Math.floor(Math.random() * mmax);
document.write(txt[txtno]);