function rotc() {
var img=new Array("http://www.e-artjapan.com/pics/clipart-contents/light house and moon.gif","http://www.e-artjapan.com/pics/clipart-contents/ammonite.gif","http://www.e-artjapan.com/pics/clipart-contents/rocket3bros.gif","http://www.e-artjapan.com/pics/clipart-contents/wndw-beach.gif","http://www.e-artjapan.com/pics/clipart-contents/mib.gif","http://www.e-artjapan.com/pics/clipart-contents/twl01.gif","http://www.e-artjapan.com/pics/clipart-contents/earthsphere.gif");
document.write('<IMG SRC="'+img[Math.floor(Math.random()*img.length)]+'">');
}