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<script>
 //메인 베스트오브베스트
 var Loadn = 1;
function bob(n) {
    for(var i = 1; i < 5; i++) {
        obj = document.getElementById('bob'+i);
        img = document.getElementById('bob_button'+i);
        if ( n == i ) {
            obj.style.display = "block";
            img.src = "/images/main/bob0"+i+"_on.gif";
        } else {
            obj.style.display = "none";
            img.src = "/images/main/bob0"+i+"_off.gif";
        }  
    }
 Loadn++;
 if(Loadn ==5){
  Loadn =1;
 }
 setTimeout("bob("+Loadn+")",1000); //1000 = 1초
}
  </script>
 <!-- 베스트오브 베스트 시작 -->
    <table width="990" border="0" cellspacing="0" cellpadding="0" style="border-bottom: 2px solid #757575;">
      <tr>
        <td width="200"><img src="/images/main/title_md.gif" alt=""  /></td>
        <td width="790" align="right" valign="bottom"><span style="cursor: pointer;">
        <div id='bob_button1' onclick='bob(1);' onmouseover='bob(1);'>첫번째</div>
        <div id='bob_button2' onclick='bob(2);' onmouseover='bob(2);'>2번째</div>
        <div id='bob_button3' onclick='bob(3);' onmouseover='bob(3);'>3번째</div>
        <div id='bob_button4' onclick='bob(4);' onmouseover='bob(4);'>4번째</div>
        </span></td>
      </tr>
    </table></td>
  </tr>
  <tr>
    <td> </td>
  </tr>
  <tr>
    <td>
   
    <table width="990" border="0" align="center" cellpadding="0" cellspacing="0" id='bob1' style='display:block;' >
        <tr>
           <td>내용1</td>
        </tr>
     </table>
    
     <table width="990" border="0" align="center" cellpadding="0" cellspacing="0" id='bob2' style='display:block;' >
        <tr>
           <td>내용2</td>
        </tr>
     </table>
    
     <table width="990" border="0" align="center" cellpadding="0" cellspacing="0" id='bob3' style='display:block;' >
        <tr>
           <td>내용3</td>
        </tr>
     </table>
    
     <table width="990" border="0" align="center" cellpadding="0" cellspacing="0" id='bob4' style='display:block;' >
        <tr>
           <td>내용4</td>
        </tr>
     </table>
    <script>bob(Loadn);</script>