ranimg = new Array();
ranimg[0] = "user_work/top/main_image/images/top_img.jpg";
ranimg[1] = "user_work/top/main_image/images/top_img02.jpg";
ranimg[2] = "user_work/top/main_image/images/top_img03.jpg";
ranimg[3] = "user_work/top/main_image/images/top_img04.jpg";
ranimg[4] = "user_work/top/main_image/images/top_img05.jpg";
ranimg[5] = "user_work/top/main_image/images/top_img06.jpg";
ranurl = new Array();
ranurl[0] = "child/index.html?link_id=m0001";
ranurl[1] = "child/index.html?link_id=m0002";
ranurl[2] = "child/index.html?link_id=m0003";
ranurl[3] = "child/index.html?link_id=m0004";
ranurl[4] = "child/index.html?link_id=m0005";
ranurl[5] = "child/index.html?link_id=m0006";
chip = Math.floor(ranurl.length * Math.random());
document.write('<a href="'+ ranurl[chip] +'"><img src="'+ ranimg[chip] +'" border="0"></a>');