head = new Array(1);

head[0] = "<td height=160 background=pic/EDbanner_ep1.jpg><img src=pic/word1.gif width=300 height=100 align=right></td>";

head[1] = "<td height=160 background=pic/EDbanner_ep4.jpg><img src=pic/word4.gif width=300 height=100 align=right></td>";

index = Math.floor(Math.random() * head.length);
document.write(head[index]);