<!--
tips = new Array(5);
tips[0] = "<img src=image/nlogo_topmiddle01.gif >";
tips[1] = "<img src=image/nlogo_topmiddle02.gif >";
tips[2] = "<img src=image/nlogo_topmiddle03.gif >";
tips[3] = "<img src=image/nlogo_topmiddle04.gif >";
tips[4] = "<img src=image/nlogo_topmiddle05.gif >";

index = Math.floor(Math.random() * tips.length);
document.write("<td>" + tips[index] + "</td>");
// -->