function showList(div_id) 
{
var obj = document.getElementById(div_id + "_ljf");
var click_obj = document.getElementById(div_id);
var text = click_obj.innerHTML;
if(obj.style.display == "none") 
{
var str = div_id.substring(0,div_id.length - parseInt(getNumberLen(div_id)));
var num = div_id.replace(str,"");
for(i=1;;i++)
{
   if(!document.getElementById(str+i)) break;
   document.getElementById(str+i+"_ljf").style.display = "none";
   var iHtml = document.getElementById(str+i).innerHTML;
   document.getElementById(str+i).innerHTML = iHtml.replace("images/over.gif","images/start.gif");
}

obj.style.display = "block";
click_obj.innerHTML = text.replace("images/start.gif","images/over.gif");
} 
else 
{ 
obj.style.display = "none";
click_obj.innerHTML = text.replace("images/over.gif","images/start.gif");
} 
}
function getNumberLen(str)
{
var ljf = null;
if (ljf = str.match(/(\d+)[^\d]*$/))
{
return ljf[1].length;
}
}



     function secBoard(n)
  {
    for(i=0;i<secTable.cells.length;i++)
      secTable.cells

[i].className="sec1";
    secTable.cells[n].className="sec2";
    for(i=0;i<mainTable.tBodies.length;i++)
      mainTable.tBodies

[i].style.display="none";
    mainTable.tBodies

[n].style.display="block";
  }