<script language="JavaScript">
function textformat(text) {
    if (document.form1.dsr_news.createTextRange && document.form1.dsr_news.caretPos) {
        var caretPos = document.form1.dsr_news.caretPos;
        caretPos.text = caretPos.text.charAt(caretPos.text.length - 1) == ' ' ?
        text + ' ' : text;
    }
    else document.form1.dsr_news.value += text;
    document.form1.dsr_news.focus(caretPos)
}
</script>

</a><a href="Javascript:tekstformat('[url=http://www.url.com]adresse[/url]');">

function replace_ubbcode(&$text){
    $text = str_replace("[url=","<a href=\"","$text");
    $text = str_replace("[/url]","</a>","$text");
}