javascript - FIrefox/Safari 不触发鼠标悬停事件以使用 css 类开关在另一个 div 上显示一个 div

Question

我有一个 div，当鼠标悬停事件发生时，应该触发一些 javascript 来将漂浮在其上的 div 的类更改为可见。该代码在 IE (8) 中运行良好，但在 firefox、chrome 或 safari 中运行不佳。我在下面附上了一个演示示例:

        <div class="videoImagePlaceHolder">
          <div class="videoInfoPlaceHolder">
            <div id="videoInfoDiv" class="videoInfoNotVisible">
            <asp:LinkButton ID="viewVideoLinkButtonHeader" runat="server" Text='FILM' Font-Size="14pt" CssClass="viewVideoLinkButton" CommandName="Select" Width="100%" Height="25px"></asp:LinkButton>
              TEST VIDEO
            </div>
        </div>
      <div class="videoImage" onMouseOver="makeVisible('videoInfoDiv');makeVisible('div2')">
         TEST OVER
         </div>

   <input id="Button1" type="button" value="button" onclick="makeVisible('videoInfoDiv')" />
       <div id="div2" class="videoInfoNotVisible">
       TEST DIV
       </div>
         <script language="javascript" type="text/javascript">
             function makeVisible(element) {
                 document.getElementById(element).className = "videoInfoVisible";
             };
             function makeHidden(element) {
                 document.getElementById(element).className = "videoInfoNotVisible";
             }

和CSS文件

.videoInfoVisible
{
 vertical-align:middle;
 width:165px;
 padding-top:3px;
 visibility:visible;
 background-image: url('../images/hover_bg.png');
 background-repeat: no-repeat;
 height:68px;
 cursor:hand;
 z-index:9000;

}

.videoInfoNotVisible
{
 vertical-align:middle;
 width:165px;
 padding-bottom:3px;
 visibility:collapse;
 height:68px;
 cursor:hand;
 z-index:0;
}
.videoImagePlaceHolder
{
 vertical-align:top;
 margin:auto;
 position:relative;
 width:165px;
 height:68px;

}
.videoInfoPlaceHolder
{
 background-position: center center;
 width: 165px;
 height: 68px;
 position: absolute;
 z-index: 10;

}
.videoImage
{
 width:165px;
 height:68px;
 position:absolute;
 z-index:9;

}

该演示包含一个按钮，因此您可以看到 javascript/定位不是问题，因为按下按钮时它会在所有浏览器中显示 div....

请帮忙!

Answer 1

问题是 .videoImage 的 z-index 低于 .videoInfoPlaceHolder。