myLine = 2;
myMes = new Array(
'<a href="http://px.a8.net/svt/ejp?a8mat=ZUORC+88I6UA+AIM+65U41" target="_blank"><img width="468" height="60" alt="キャラアニ.com" src="http://www23.a8.net/svt/bgt?aid=060218328498&amp;wid=015&amp;eno=01&amp;mid=s00000001363001035000&amp;mc=1" /></a><img width="1" height="1" src="http://www10.a8.net/0.gif?a8mat=ZUORC+88I6UA+AIM+65U41" alt="" />',
'<a href="http://px.a8.net/svt/ejp?a8mat=UFFV0+AV640Y+NA2+62ENL" target="_blank"><img width="468" height="60" alt="キャラ&amp;ホビー格安あみあみ" src="http://www29.a8.net/svt/bgt?aid=051108876657&amp;wid=015&amp;eno=01&amp;mid=s00000003017001019000&amp;mc=1" /></a><img width="1" height="1" src="http://www11.a8.net/0.gif?a8mat=UFFV0+AV640Y+NA2+62ENL" alt="" />'
);
myRnd = Math.floor(Math.random()*myLine);
document.write(myMes[myRnd]);