css opacity not working correctly in IE 6 / IE7 or IE8 in Compatibilty mode

In the following code the first and second images with anchors have link开发者_如何学Pythons and in these images the caption text does not hide (opacity 0) on page load in IE 6 / IE7 or IE8 in Comp mode. All other images work fine but I need to but links in them.

Here is the code in JSfiddle

FF works fine and IE8 in normal mode is fine as well

I would post the whole code here but its rather long and I was having trouble doing so.

ADDED js code

$(window).load(function(){
//for each description div...
$('div.description').each(function(){
    //...set the opacity to 0...
$(this).css('opacity', 0);
    //..set width same as the image...
    $(this).css('width', $(this).siblings('img').width());
    //...get the parent (the wrapper) and set it's width same as the image width... '
    $(this).parent().css('width', $(this).siblings('img').width());
    //...set the display to block
    $(this).css('display', 'inline-block');
});
$('div.wrapper').hover(function(){
    //when mouse hover over the wrapper div
    //get it's children elements with class descriptio
    //and show it using fadeTo
    //$(this).children('.description').show();
    $(this).children('.description').stop().fadeTo(500, 0.7);
},function(){
    //when mouse out of the wrapper div
    //use fadeTo to hide the div
    $(this).children('.description').stop().fadeTo(500, 0);
});
});

It seems to not like this...

$(this).css('opacity', 0);

It's a hasLayout bug. You can fix it by adding zoom: 1 to your div.wrapper class CSS declaration:

div.wrapper{
    zoom: 1;
    position:relative;  
}

Fix in action here.

IE before version 8 doesn't support the official implementation of opacity. While the official version is

opacity: [0..1]

IE's implementation before version 8 (and hence, IE8's compatibility mode, which acts like IE7) is this

filter: alpha(opacity=[0..100])

Try these for at least IE7 and 8:

.opaque1 {  // for all other browsers
    opacity: .5;
}

.opaque2 {  // for IE5-7
    filter: alpha(opacity=50);
}

.opaque3 {  // for IE8
    -ms-filter:"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)";
}




$(this).css(
  {
     'opacity': 0,
     '-ms-filter':"progid:DXImageTransform.Microsoft.Alpha(Opacity=50)",
     'filter': 'alpha(opacity=50)'
   });

UPDATE edited to use his code from jsbin

try this css

.transparent {
    filter:alpha(opacity=50);
    -moz-opacity:0.5;
    -khtml-opacity: 0.5;
    opacity: 0.5;
}

and add class whith JQuery

$('div.description').each(function(){
    //...set the opacity to 0...
$(this).addClass('transparent')
...