Christina,
Sorry, I lost my connection and couldn't get back on :(
When I got home (I was at work), I checked your site and it was still the same. I checked the copy of your style.css file that was in my temp. internet files, and those definitions didn't show up?? Anyhow I reckon your style.css should look like this:
body{ color: #000000; background: #E4E49C; font-family: Verdana,Arial; margin: 0px}
table{ margin: 5; padding: 5; font-size: small;}
table td{ padding: 0; border-width: 0; vertical-align: top; font-family: Verdana, Arial, Helvetica, sans-serif;}
a{ color: #7E8782; text-decoration: none; font-weight: bold; font-size: 12px}
a:hover{ color: #FFFFFF;background-color:#7E8782}
/*start addition here*/
a:link( background-color : #E4E49C;
background : #E4E49C;
}
a:active { background-color : #E4E49C;
background : #E4E49C
}
a:visited {
background : #E4E49C;
background-color : #E4E49C;
}
/* end addition here*
ul{ margin: 2px; padding: 2px; list-style: decimal inside; text-align: left;}li{ margin-left: 2px; list-style: square inside; color: #2F5376;}.itemHead{ padding: 3px; background-color: #FEF278; color: #000000;}.itemInfo{ text-align: right; padding: 3px; background-color: #FEF278;}.itemTitle a{ font-size: 130%; font-weight: bold; font-variant: small-caps; color: #47422F; font-style: italic}.itemPoster{ font-size: 90%; font-style: italic;}.itemPostDate{ font-size: 90%; font-style: italic;}.itemStats{ font-size: 90%; font-style: italic;}.itemBody{ padding-left: 5px;}.itemText{ margin-top: 5px; margin-bottom: 5px; line-height: 1.5em;}:first-letter.itemText{ font-size: 133%; font-weight: bold;}.itemFoot{ text-align: right; padding: 3px; background-color: #FFF9C5;}.itemAdminLink{ font-size: 90%;}.itemPermaLink{ font-size: 90%;}th{ background-color: #FEF278; color: #000000; padding: 2px; vertical-align: middle; font-family: Verdana, Arial, Helvetica, sans-serif}td#headerbanner{ width: 100%; background-color: #7E8782; vertical-align: middle; height: 80px; padding-right: 5px}td#headerlogo{ background-color: #7E8782; text-indent: 5px}td#headerbar{ height: 25px; text-align: left; vertical-align: middle; line-height: 22px; font-size: 10px; border-bottom: 1px solid #000000; padding-bottom: 1px; background-color: #7E8782; color: #FFFFFF; border-top: 1px solid #000000}td#headerbar a{ color: #FFFFFF;}td#leftcolumn{ font-size: 11px; background-color: #FFF9C5; border-right: 1px solid #4E6B6D}td#leftcolumn th{ background-color: #7E8782; color: #FFFFFF; vertical-align: middle}td#leftcolumn div.blockTitle{ font-weight: bold; color: #FFFFFF; background-color: #7E8782; padding: 5px}td#leftcolumn div.blockContent{ padding: 3px;}td#centercolumn{ font-size: 11px; width: 100%; padding-right: 4px;}td#centercolumn th{ background-color: #FDF377; color: #FFFFFF; vertical-align: middle}td#centerCcolumn{ padding: 3px;}td#centerCcolumn div.blockTitle{ padding: 3px; color: #FFFFFF; font-weight: bold; margin-top: 0px; margin-right: 0px; margin-left: 0px; background-color: #7E8782;}td#centerCcolumn div.blockContent{ border-bottom: 1px solid #dddddd; padding: 2px; margin-bottom: 2px;}td#centerLcolumn{ width: 50%; padding: 0px 3px 0px 0px;}td#centerLcolumn div.blockTitle{ padding: 3px; color: #FFFFFF; font-weight: bold; margin-top: 0px; background-color: #7E8782; margin-left: 2px}td#centerLcolumn div.blockContent{ border-bottom: 1px solid #dddddd; padding: 3px; margin-left: 3px; margin-right: 2px; margin-bottom: 2px;}td#centerRcolumn{ width: 50%; padding: 0px 3px 0px 0px;}td#centerRcolumn div.blockTitle{ padding: 3px; color: #FFFFFF; font-weight: bold; margin-top: 0px; background-color: #7E8782;}td#centerRcolumn div.blockContent{ border-bottom: 1px solid #dddddd; padding: 3px; margin-left: 2px; margin-right: 3px; margin-bottom: 2px; line-height: 120%;}div#content{ text-align: left; padding: 2px; width: 100%;}td#rightcolumn{ font-size: 11px; background-color: #FFF9C5; border-left: 1px solid #4E6B6D}td#rightcolumn th{ background-color: #7E8782; color: #FFFFFF; vertical-align: middle}td#rightcolumn div.blockTitle{ font-weight: bold; color: #FFFFFF; background-color: #7E8782; padding: 5px}td#rightcolumn div.blockContent{ padding: 3px;}tr#footerbar{ text-align: center; background-image: url('hbar.gif');}td#mainmenu a{ display: block; margin: 0; padding: 4px;}td#mainmenu a:hover{ color: #FFFFFF;background-color:#7E8782}td#mainmenu a.menuTop{ padding-left: 3px;}td#mainmenu a.menuMain{ padding-left: 3px;}td#mainmenu a.menuSub{ padding-left: 18px; background-image: url('strela.png'); background-repeat: no-repeat; background-position: left;}td#usermenu a{ display: block; margin: 0; padding: 3px; font-weight: normal; font-size: 10px;}td#usermenu a:hover{ background-color: #7E8782;color:#FFFFFF}td#usermenu a.highlight{ background-color: #fcc;}.head{ background-color: #FEF278; padding: 5px; font-weight: bold}.even{ background-color: #FEF278; padding: 5px}.odd{ background-color: #FEF278; padding: 5px}.foot{ background-color: #FFF9C5; padding: 5px; font-weight: bold}tr.even td{ background-color: #FFF9C5; padding: 5px}tr.odd td{ background-color: #FFF9C5; padding: 5px}div.errorMsg{ background-color: #FFCCCC; text-align: center; border-top: 1px solid #DDDDFF; border-bottom: 1px solid #AAAAAA; font-weight: bold; padding: 10px;}div.confirmMsg{ background-color: #FFF9C5; color: #47422F; text-align: center; border-top: 1px solid #DDDDFF; border-bottom: 1px solid #AAAAAA; font-weight: bold; padding: 10px}div.resultMsg{ background-color: #E1E1E1; color: #333333; text-align: center; border-top: 1px solid silver; font-weight: bold; border-bottom: 1px solid #666666; padding: 5px;}div.xoopsCode{ background: #FFFFFF; border: 1px inset #000080; font-family: "Courier New",Courier,monospace; padding: 0px 6px 6px 6px;}div.xoopsQuote{ background: #FFFFFF; font-family: "Courier New",Courier,monospace; padding: 0px 6px 6px 6px;}.comTitle{ font-weight: bold; margin-bottom: 2px;}.comText{ padding: 2px;}.comUserStat{ font-size: 10px; color: #2F5376; font-weight: bold; border: 1px solid silver; background-color: #ffffff; margin: 2px; padding: 2px;}.comUserStatCaption{ font-weight: normal;}.comUserStatus{ margin-left: 2px; margin-top: 10px; color: #2F5376; font-weight: bold; font-size: 10px;}.comUserRank{ margin: 2px;}.comUserRankText{ font-size: 10px; font-weight: bold;}.comUserRankImg{ border: 0px none;}.comUserImg{ margin: 2px;}.comDate{ font-weight: normal; font-style: italic; font-size: smaller;}.comDateCaption{ font-weight: bold; font-style: normal;}.zaja{ width: 750px; background-color: #EFF8F8; border-left-width: 1px; border-top-width: 0px; border-bottom-width: 0px; border-right-width: 1px; border-color: #285151; border-style: solid;}form{ display: inline; font-family: Verdana; font-size: 11px;}.button{ font-family: Verdana; color: #275050; font-size: 10px; margin-top: 2px; margin-right: 4px;}.input{ font-family: Verdana; background-color: #E9F3F3; color: #2C5656; font-size: 10px; border-width: 1px; border-color: #FCFEFE; margin-top: 1px; border-bottom: 1px solid #999999;}input{ font-size: 10px;}.sadrzaj{ margin-bottom: 20px;}.blok{ margin-bottom: 6px;}.forum{ background-color: #7E8782; font-size: 11px; font-weight: bold; color: #FFFFFF; padding: 6px; }.forumprvi{ background-color: #F7F9FB; padding: 3px; color: #004080;}.forumdrugi{ background-color: #EFF3F8; padding: 3px; color: #004080;}.navigacijaforum{ background-color: #E3ECF2; padding: 5px; color: #004080; border-top: 1px dashed #333333; border-bottom: 1px dashed #333333; font-size: 12px; text-align: center; font-weight: bold;}.gumb{ border: 1px outset #ffffff; color: #2E2E2E; background-color: #E8E8E8; border-top: 1px solid #FFFFFF;}.border{ border-left: 1px solid #cccccc; border-bottom: 1px solid #cccccc; padding: 3px;}.borderdesno{ border-bottom: 1px solid #cccccc; border-right: 1px solid #cccccc; padding: 3px;}.forum a{ color: #FFFFFF;}.download{ padding: 2px;}.downhead{ color: #FFFFFF; padding: 2px; background-color: #7E8782;}.downloadsvaki{ width: 100%; border-top: 1px solid #333333; border-bottom: 1px solid #333333; padding: 2px;}
I hope that works for you.
Anyhow, have a look at
this post which has a commented version of the default style.css file, it might help you work out what you need to change.