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                        /用JavaScript實現(xiàn)圖片緩慢縮放效果

大神幫我看看是哪里的問題？怎么實現(xiàn)不了達(dá)到最大值停止放大的效果

<!doctype?html>
<html>
	<head>
		<title>獲取樣式</title>
		<meta??charset="UTF-8">
		<!--<link?rel="stylesheet"?type="text/css"?href="CSS/style.css">
		<script?type="text/javascript"?src="Js/script.js"></script>-->
	</head>
	<body>
		<div?style="width:300px;margin:?auto;">
			<img?src="images/heaven.png"?id="myImages">
		</div>
		<script?type="text/javascript">
		window.onload=function(){
			var?oImg=document.getElementById('myImages');
			oImg.onclick=function(){
				alert("你好!");
				maxFun();
			}
		}
		var?oImg=document.getElementById('myImages');
		//定義放大函數(shù)
		var?maxwidth=oImg.width*2;
		var?maxheight=oImg.height*2;
		function?maxFun(){
			var?endwidth=oImg.width*1.3;
			var?endheight=oImg.height*1.3;
			var?maxTimer=setInterval(function(){
				if?(oImg.width<endwidth)?{
					if?(oImg.width<maxwidth)?{
						oImg.width=oImg.width*1.05;
				????oImg.height=oImg.height*1.05;
					}?else{
						clearInterval(maxTimer);
					}
			????}else{
			????	clearInterval(maxTimer);
			????}
			},20);
		}
		</script>
	</body>
</html>