Shellshock script 2

var highCenter = document.createElement('center');
highCenter.style = "width:100%;position:fixed;top:7%;font-size:18px;z-index:99999;color:white;";
var highDiv = document.createElement('div');
highDiv.style = "text-shadow:0em 0em .1em #000,0em .1em .2em #000;";
highCenter.appendChild(highDiv);
document.body.appendChild(highCenter);
var playerList;
var topPlayer;
var topPlayerScore;
var topPlayerName;
var highScore = 0;
var highName = "";

setInterval(function(){
playerList = document.getElementById('playerList');
if (playerList){
topPlayer = playerList.getElementsByTagName('div')[0];
topPlayerScore = topPlayer.getElementsByTagName('span')[1].innerHTML;
topPlayerName = topPlayer.getElementsByTagName('span')[0].innerHTML;
if (+topPlayerScore > highScore){
highScore = topPlayerScore;
highName = topPlayerName;
highDiv.innerText = "Best Score: " + highScore + " by " + highName;
}
}
}, 100);

var sight = document.createElement('div');
var size = 6;
sight.style.height = size + "px";
sight.style.width = size + "px";
sight.style.position = "fixed";
sight.style.zIndex = 99999999;
sight.style.backgroundColor = "white";
sight.style.border = "1px solid black";
sight.style.borderRadius = "2px";
sight.style.top = ((window.innerHeight / 2) - ((size / 2))) + "px";
sight.style.left = ((window.innerWidth / 2) - ((size / 2))) + "px";

document.body.appendChild(sight);

setInterval(function(){
sight.style.top = ((window.innerHeight / 2) - ((size / 2))) + "px";
sight.style.left = ((window.innerWidth / 2) - ((size / 2))) + "px";
}, 1000);



document.addEventListener('keyup', function(e){
	if (e.keyCode == 189){
		size = size - 2;
		sight.style.height = size + "px";
		sight.style.width = size + "px";
		sight.style.top = ((window.innerHeight / 2) - ((size / 2))) + "px";
        sight.style.left = ((window.innerWidth / 2) - ((size / 2))) + "px";
	} else if (e.keyCode == 187) {
		size = size + 2;
		sight.style.height = size + "px";
		sight.style.width = size + "px";
		sight.style.top = ((window.innerHeight / 2) - ((size / 2))) + "px";
        sight.style.left = ((window.innerWidth / 2) - ((size / 2))) + "px";
	}
});
var toggleAid = 0;
document.addEventListener('keyup', function(){
	if (event.keyCode == 81){
		if (toggleAid === 0){
			toggleAid = 1;
			sight.style.display = "none";
		} else {
			toggleAid = 0;
			sight.style.display = "block";
		}

	}
});