アクセスごとに違う画像を表示し、画像毎に別のページへジャンプ

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title></title> <script type="text/javascript"> <!-- function cngI(){ arrI = new Array("1.gif","2.gif","3.gif","4.gif","5.gif"); arrA = new Array("bg1.html","bg2.html","bg3.html","bg4.html","bg5.html"); var num = arrI.length; var i = Math.floor(Math.random()*num); document.getElementById("img").src = arrI[i]; document.getElementById("img").onclick = function (){ location.href = arrA[i]; } } //--> </script> </head> <body onLoad="cngI()"> <p><img src="dmy.gif" id="img" alt=""></p> </body> </html>
