icons problem

hi all i have a weird problem, in certain browsers when logged into my site the icons (top right) show as crosses and not sure what to do.

This happens in Safari and chrome, it even happens on some peoples firefox. Is it to do with the java ??

I have a problem only when using Opera with the "Add to Cart" and "Info" icons under "My Membership", "Available Membership Types".  The buttons and text are skewed and it could confuse some website users.

Hello try to switch off the cache for images into admin panel

I have found my problem (in firebug)  but dont know where to change it in the template files :(

<a class="bottom_indent" href="">




<img width="30px" height="30px" title="" src="templates/tmpl_blue/images/spacer.gif">



</a>

the tmpl_blue should be tmpl_black