<div?class="clickMe"?id="clickMe">猜猜我有啥？<a?href="javascrip:void(0);"?id="closeBtn"></a></div>

這個a標簽被放置到 clickMe中，那么下面點擊a標簽不是也算鼠標移入到了clickMe中么，不是也應該算觸發了鼠標移入事件么，為什么還能隱藏showPic呢

?window.onload?=?function(){
????????????var?TipBox?=?document.getElementById("tipCon");
????????????var?ClickMe?=?document.getElementById("clickMe");
????????????var?showPic?=?document.getElementById("showPic");
????????????var?closeBtn?=?document.getElementById("closeBtn");
????????????ClickMe.onmouseover?=?function(){
????????????????console.info("clicme");
????????????????showPic.style.display?=?'block';
????????????????closeBtn.style.display?=?'block';
????????????}
????????????closeBtn.onclick?=?function(){
????????????????console.info("clic");
????????????????showPic.style.display?=?'none';
????????????????closeBtn.style.display?=?'none';
????????????}
????????}

另外我將tipCon設置了高以后點擊關閉按鈕就沒有用了，這是什么原因？

.tipCon{height:200px;position:fixed;background:#efefef;color:#000;font-size:16px;text-align:center;bottom:0;right:0;}