<td width="50%" align="right">
       <img src="<%=cp%>/Images/Symbol_Right.png" border="0" width="34" height="34" name="Hgo_otv" id="Hgo_otv"/>  
       <img src="<%=cp%>/Images/Add.png" border="0" width="34" height="34" name="HAdd" id="id_HAdd"/>   
       <img src="<%=cp%>/Images/Edit_Yes.png" border="0" width="34" height="34" name="HEdit" />
     </td>

      document.getElementById('Hgo_otv').style.display = 'none';  
      document.getElementById('Hgo_otv').style.display = 'block';

      <div class="macmenu">
       <div class="button">
         <a href="#" id="id_H1"><img src="<%=cp%>/Images/Tools.png"/></a>
         <a href="#"  id="id_H2"><img src="<%=cp%>/Images/Symbol_Back.png"/></a>
         <a href="#"  id="id_H3"><img src="<%=cp%>/Images/Symbol_Right.png"/></a>
       </div>
      </div>

.button {
  margin:0 0 0 15%;  
  width:85%; 
}