rock.js

// Generated by CoffeeScript 1.6.3
var userName;
var intervalSet = false;
 
function touchRock() {
  if (userName === undefined ) {
		userName = prompt("What is your name?");
		alert("It's nice to meet you " + userName);
		document.getElementById("rockImg").src = "rock2.jpeg";
	}
	if (intervalSet == false) {
		setInterval(move,1000);
		intervalSet = true;
	}
}

function move() {
	if (document.getElementById("rockImg").style.float === "right") {
		document.getElementById("rockImg").style.float="left";
	}
	else{
		document.getElementById("rockImg").style.float="right";
	}
}