var banner=new Array();
banner[0]='<img border=0 src=/images/art_header.jpg alt="Header1"></a>';
banner[1]='<img border=0 src=/images/art_header2.jpg alt="Header2"></a>';
banner[2]='<img border=0 src=/images/art_header3.jpg alt="Header3"></a>';
banner[3]='<img border=0 src=/images/art_header4.jpg alt="Header4"></a>';
banner[4]='<img border=0 src=/images/art_header5.jpg alt="Header5"></a>';
banner[5]='<img border=0 src=/images/art_header6.jpg alt="Header6"></a>';
banner[6]='<img border=0 src=/images/art_header7.jpg alt="Header7"></a>';
banner[7]='<img border=0 src=/images/art_header8.jpg alt="Header8"></a>';

var whichbanner=Math.floor(Math.random()*(banner.length));document.write(banner[whichbanner]);