document.getElementById("diggoo").addEventListener("onmousemove",function(){
document.getElementById("diggoo").innerHTML+="</br>diggoo";
document.body.style.backgroundColor=randomColor();
});
function randomColor(){
 var c = '';
 while (c.length < 7) {
   c += (Math.random()).toString(16).substr(-6).substr(-1)
 }
 return '#'+c;
}