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问题:

Here is the problem : I want to create reactive zones on a image using transparent div, but the following code doesn't work on IE (tested on Chrome) : the background-color of the div "hover_zone" doesn't change at all.

The problem is due to the background-color set to transparent. Use any valid color like #FFF and it works (it seems IE thinks like: it's transparent, it doesn't contain anything, let's not display it).

<html>
<body>

<style type='text/css'>

#hover_zone{
    background-color:transparent;
    visibility: visible;
    position:absolute;
    width:40px;
    height:40px;
    left:10px;
    top:10px;
    z-index:1000;
}

a:hover #hover_zone{
    background-color:#0C0;
    visibility: visible;
}

</style> 

<div id="container">
  <img src="http://ptaff.ca/blogue/wp-content/uploads/noir_black.png" />
  <a href="#"><div id="hover_zone"></div></a>
</div>

</body>
</html>

Thanks for your help!

Cheers!

回答1:

I had this exact problem and fixed it with this style:

div#hover-zone { background:transparent url('../images/spacer.gif') 0 0 repeat; }

where spacer.gif is a 1px transparent gif.

hope this helps.

回答2:

user filter for ie

   background-color: #ffffff;  /* the background          */
   filter:alpha(opacity=50);   /* Internet Explorer       */
   -moz-opacity:0.5;           /* Mozilla 1.6 and below   */
   opacity: 0.5;               /* newer browser and CSS-3 */

回答3:

I had this same problem, and my solution was to make the element have a "real" background color, but have zero opacity. Unfortunately, there is no "good" crossbrowser way to make that happen, but since I happened to need the element be partially transparent on hover, that was a de facto non-issue, so this solution worked well for me. It may not be right for you, but perhaps it will help others so I'll post it anyway.

.hotspot
{
    background-color: #FFFFFF; /* will be visible upon hover */

    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)"; /* IE 8 */
    filter: alpha(opacity=0); /* IE 5-7 */
    -moz-opacity: 0; /* Netscape */
    -khtml-opacity: 0; /* Safari 1.x */

    opacity: 0;
}
.hotspot:hover
{
    -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=70)"; /* IE 8 */
    filter: alpha(opacity=70); /* IE 5-7 */
    -moz-opacity: 0.7; /* Netscape */
    -khtml-opacity: 0.7; /* Safari 1.x */

    opacity: 0.7;
}

回答4:

Put the 'img' inside the 'a' and use 'span' for the 'div' (blockelement not allowed in inline)

<style type='text/css'>

#hover_zone{
    position:absolute;
    display:block;
    width:40px;
    height:40px;
    left:10px;
    top:10px;
}
a:hover #hover_zone{
    background-color:#0C0;
}

</style> 

<div id="container">

  <a href="#"><span id="hover_zone"></span><img src="http://revaxarts.com/portfoliodata/fotobox/screenshot.jpg" /></a>
</div>