Как сделать кнопку цитировать для мини чата?

<?if($NUMBER$='1')?>
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function getSel(i){var d=document,a=d.getElementById(i),w=window;return (a&&a.value)? a.value.substring(a.selectionStart,a.selectionEnd):w.getSelection?w.getSelection():d.getSelection?d.getSelection():d.selection?d.selection.c  reateRange().text:false}
function chatInsert(a,b){if(b!=""){a=a.replace(/[\[\]]/g,"|");chatPaste("[quote="+a+"]"+b+"[/quote]\n",0)}else{alert('Выделите текст для цитирования')}};
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<div class="mDetails">[<a href="javascript://" onclick="chatInsert('<?if($USERNAME$)?>$USERNAME$<?else?>$NAME$<?endif?>',getSel());">Цитировать</a>]</div>