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