Navigation und Content transparent machen?

<style type="text/css">
<!--
td.edit_header_full{background-image:url(http://easyhost.extra.hu/upload/1184413515.jpg);background-color:;}
td.headline{visibility:hidden;}
td.headline2{visibility:hidden;}
body{background-image:url(http://img.webme.com/pic/f/florian33/tokiomarui-1102674247.jpg);background-attachment: fixed;background-color:#181818;}
td.nav{background-image:url(URL);background-color: transparent;}
td.nav:hover{background-image: url(URL);background-color: transparent;}
td.nav_heading{background-image:url();background-color:#000000;}
td.edit_below_nav{visibility:hidden;}
td.edit_navi_headbg{background-image:url();}
td.edit_rechts_sbg{visibility:hidden;}
td.sidebar_heading{background-image:url();background-color:#000000;}
td.edit_content_top{background-image:url(URL);background-color: transparent;}
td.edit_content{background-image:url(URL);background-color: transparent;}
td.edit_content_bottom{background-image:url(URL);background-color: transparent;}
td.edit_content_bottom2{background-image:url(URL);}
td.shouty{background-image:url();background-color:#2E2E2E;}
td.shouty2{background-image:url(http://img223.imageshack.us/img223/8752/rechtebox12tx3.jpg);background-color:#000000;}
td.shouty3{background-image:url();background-color:#2E2E2E;}
td.shouty4{background-image:url();background-color:#2E2E2E;}
td.shouty5{background-image:url();background-color:#2E2E2E;}
td.edit_rechts_cbg{background-image: url();}
td.edit_rb_footer{background-image:url(http://img522.imageshack.us/img522/9452/rbfooter17gf5.jpg);background-color:;}
td.edit_rechts_bottom{background-image: url(URL);}
td.edit_content_bottom:hover{background-image:url(http://img141.imageshack.us/img141/2843/contendbottom3ug2.jpg);background-color:#000000;}

-->
</style>