// JavaScript Document

document.onmousemove = moveHandler;

function moveHandler(evt) {
	if (!evt) {
		evt = window.event;
	}
	animateEyes(evt.clientX,evt.clientY);
}

function animateEyes(xPos,yPos) {
	
	var eyeBall = document.getElementById("eyeBall").style;
	
	eyeBall.left = newEyeballPos(xPos,-135);
	eyeBall.top = newEyeballPos(yPos,30);
	
	function newEyeballPos(currPos,eyePos) {
		return Math.min((currPos/35)+(eyePos-24),eyePos+57) + "px";
	}
}