Header image doesn’t show up in IE

I’m using the “soccersta” theme and have modified the header image by creating a new image and placing it in the same folder as the old image. I renamed the original image to “oldtop.jpg” and named the new image “top.jpg” so all should work fine right? I thought so since I use Firefox as my browser but users with IE are telling me that they cannot see the header image on any of my pages.

The blog is located at https://www.nbspiritrun.com

I’ve included the code located in the header.php file that I suspect is causing the problem below:

<!–[if lte IE 6]>

<style type=”text/css”>
.class {
behavior:url(“pngbehavior.htc”);
filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='<?php bloginfo(‘template_directory’); ?>/images/im.png’);
background:url(images/blank.gif);
}
.sidebar {
behavior:url(“pngbehavior.htc”);
filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='<?php bloginfo(‘template_directory’); ?>/images/sidebar.png’);
background:url(images/blank.gif);
}
</style>

<![endif]–>

Any ideas for a fix?