Hello My Problem "transparent png" and "alpha(opacity=50)"

[misima]

Hello My Problem "transparent png" and "alpha(opacity=50)"

Problem This...
http://www.varli.com.tr/resimler/pngproblem.jpg

Please Help me :(...

Code This


<style type="text/css">
#alImg1 img {
filter:progid:DXImageTransform.Microsoft.Alpha(opacity=50);
}
#alImg1, #alImg2 {
display: inline-block;
}
body {
background-image: url(line.png);
}
</style>
<span id="alImg1" >
<img src="transparentBorder.png" width="227" height="226" border="0" alt=""></span>
<span >
<img src="transparentBorder.png" width="227" height="226" border="0" alt=""></span>