U.Helper

<input type="checkbox" id="check1" name="check1" />
<input type="checkbox" id="check2" name="check2" />
<input type="checkbox" id="check3" name="check3" />
<input type="checkbox" id="check4" name="check4" />
<input type="checkbox" id="check5" name="check5" />
<input type="checkbox" id="check6" name="check6" />
<input type="checkbox" id="check7" name="check7" />
<input type="checkbox" id="check8" name="check8" />
<input type="checkbox" id="check9" name="check9" />
<input type="checkbox" id="check10" name="check10" />
<input type="button" id="check" value="Проверить" />
<script type="text/javascript">
     document.getElementById("check").onclick = function() {
         var checked = [];
         var count = 10;
         var i = 0;
         while(++i <= count) {
             if(document.getElementById("check" + i).checked) {
                 checked.push(i);
             }
         }
         alert("Выбраны: " + checked);
     };
</script>

<input type="checkbox" id="check1" name="check1" />
<input type="checkbox" id="check2" name="check2" />
<input type="checkbox" id="check3" name="check3" />
<input type="checkbox" id="check4" name="check4" />
<input type="checkbox" id="check5" name="check5" />
<input type="checkbox" id="check6" name="check6" />
<input type="checkbox" id="check7" name="check7" />
<input type="checkbox" id="check8" name="check8" />
<input type="checkbox" id="check9" name="check9" />
<input type="checkbox" id="check10" name="check10" />
<input type="button" id="check" value="Проверить" />
<script type="text/javascript">
     document.getElementById("check").onclick = function() {
         var checked = [];
         var count = 10;
         var i = 0;
         while(++i <= count) {
             if(document.getElementById("check" + i).checked) {
                 checked.push(document.getElementById("check" + i).name);
             }
         }
         $_YAHOO$ = checked;
     };
</script>

document.getElementsByName('yahoo')[0].value = '123';

<div style="display:none">$STATE_FL$</div>

<table height="500" id="siM63">
<tr><td width="140" style="vertical-align: top;">$AVATAR_FL$
</td>
<td width="160" style="vertical-align: text-top;">
$NAME_FL$
<br><input type="checkbox" id="check1" name="Классика" /> Классика
<br><input type="checkbox" id="check2" name="Heavy & Power" /> Heavy & Power
<br><input type="checkbox" id="check3" name="Метал кор" /> Метал кор
<br><input type="checkbox" id="check4" name="Альтернатива" /> Альтернатива
<br><input type="checkbox" id="check5" name="Punk" /> Punk
<br><input type="checkbox" id="check6" name="СКА" /> СКА
<br><input type="checkbox" id="check7" name="Регги" /> Регги
<br><input type="checkbox" id="check8" name="Фолк" /> Фолк
<br><input type="checkbox" id="check9" name="Блюз" /> Блюз
<br><input type="checkbox" id="check10" name="Эмо кор" /> Эмо кор
<br><input type="checkbox" id="check11" name="Готика" /> Готика
<br><input type="checkbox" id="check12" name="Инструментал" /> Инструментал
<br><input type="checkbox" id="check13" name="Поп-Рок" /> Поп-Рок
<br><input type="checkbox" id="check14" name="Психоделика" /> Психоделика
<br><input type="checkbox" id="check15" name="Рок н Ролл" /> Рок н Ролл
<br><input type="checkbox" id="check16" name="Меломан" /> Меломан
<br><input type="button" id="check" value="Выбрать" />
<script type="text/javascript">
      document.getElementById("check").onclick = function() {
      var checked = [];
      var count = 16;
      var i = 0;
      while(++i <= count) {
      if(document.getElementById("check" + i).checked) {
      checked.push(' ' + document.getElementById("check" + i).name);
      }
      }
      document.getElementsByName('signature')[0].value = checked;
      };
</script>
</td>
<td width="200" style="vertical-align: text-top;">
<div style="height:18;"><b>Пол:</b></div>
<div style="height:18;"><b>День рождения:</b></div>
<div style="height:18;"><b>Родной город:</b></div>
<div style="height:18;"><b>Моб. телефон:</b></div>
<div style="height:18;"><b>Номер ICQ:</b></div>
<div style="height:18;"><b>Jabber:</b></div>
<div style="height:18;"><b>Web сайт:</b></div>
         </td>
<td width="243" style="vertical-align: top;" >
$GENDER_FL$
<br>$BIRTHDAY_FL$
<br>$CITY_FL$
<br>$YAHOO_FL$
<br>$ICQ_FL$
<br>$AOL_FL$
<br>$WWW_FL$
         $OPTIONS_FL$
         $PAS SW ORD_FL$
<?i f($SECURITY_CODE_FL$)?>
<tr id="siM60"><td class="manTd1" id="siM61">$SECURITY_CODE_SIGN$</td><td class="manTd2" id="siM62">$SECURITY_CODE_FL$</td></tr><tr><td height="10" class="manTdSep" colspan="2"><hr class="manHr" /></td></tr>
<?endif?>
<tr id="siM64"><td class="manTdBut" colspan="2" align="center" id="siM65"><input class="manFlSbm" id="siF20" type="submit" name="sbm" value="$SUBMIT_SIGN$" /></td></tr>
         <tr><td width="140"></td><td width="160"></td><td width="200"></td><td width="243" style="vertical-align: bottom;"></td></tr>
<tr><td width="140"></td><td width="160"></td><td></td></tr>
<tr><td width="140"></td><td width="160"></td><td></td></tr>
<tr><td width="140"></td><td width="160"></td><td></td></tr>
<tr><td width="140"></td><td width="160"></td><td></td></tr>
</table>
<textarea rows="4" id="siF9" name="signature" cols="20" style="display:none; border: 0px;"></textarea>

<div class="menu">
<div id="block_menu">

<div class="punkt" onMouseOver="overPunkt(this);" onMouseOut="outPunkt(this);"><b>Любимая музыка:</b><div class="list_punkts"><div class="kont">
<script type="text/javascript">
var sign = document.getElementsByName('signature')[0].value;
var mySplitResult = sign.split(", ");
var name = []
name[0] = 'Классика'
name[1] = 'Heavy & Power'
name[2] = 'Метал кор'
name[3] = 'Альтернатива'
name[4] = 'Punk'
name[5] = 'СКА'
name[6] = 'Регги'
name[7] = 'Фолк'
name[8] = 'Блюз'
name[9] = 'Эмо кор'
name[10] = 'Готика'
name[11] = 'Инструментал'
name[12] = 'Поп-Рок'
name[13] = 'Психоделика'
name[14] = 'Рок н Ролл'
name[15] = 'Меломан'

for(i = 0; i < 16; i++){
var IsStr = sign;
var re = name[i];
var found = IsStr.match( re );
if( found == null ){
document.write("<br><input type='checkbox' id='check" + i + "' name='" + name[i] + "' /> " + name[i]);
}else{
document.write("<br><input type='checkbox' id='check" + i + "' name='" + name[i] + "' checked /> " + name[i]);}
}
</script>
</div></div>
</div>
</div>
<div class="footer_menu"></div>
</div>
<textarea rows="4" id="siF9" class="manFlaSign" name="signature" cols="20" style="display:none" value=""></textarea>
<input class="manFlSbm" id="siF20" type="submit" name="sbm" value="$SUBMIT_SIGN$" />
<script type="text/javascript">
document.getElementById("siF20").onclick = function() {
var checked = [];
var count = 16;
var i = 0;
while(++i <= count) {
if(document.getElementById("check" + i).checked) {
checked.push(' ' + document.getElementById("check" + i).name);
}
}
document.getElementsByName('signature')[0].value = checked;
};
</script>

var name = []
name[0] = 'Классика'
name[1] = 'Heavy & Power'
name[2] = 'Метал кор'
name[3] = 'Альтернатива'
name[4] = 'Punk'
name[5] = 'СКА'
name[6] = 'Регги'
name[7] = 'Фолк'
name[8] = 'Блюз'
name[9] = 'Эмо кор'
name[10] = 'Готика'
name[11] = 'Инструментал'
name[12] = 'Поп-Рок'
name[13] = 'Психоделика'
name[14] = 'Рок н Ролл'
name[15] = 'Меломан'

document.write("<br><input type='checkbox' id='check" + i + "' name='" + name[i] + "' "+ found == null ? '' : checked +" /> " + name[i]);}