function showOption(id, nrmax)
{
    
    for (var i=1; i<=nrmax; i++)
    {
        if(i==id)
        {
            eval("document.getElementById('div_opt_t_"+i+"').style.visibility='visible';");
            eval("document.getElementById('div_opt_t_"+i+"').style.display='inline';");  
            eval("document.getElementById('div_opt_"+i+"').style.visibility='visible';");
            eval("document.getElementById('div_opt_"+i+"').style.display='inline';"); 
            eval("document.getElementById('td_r_"+i+"').className='itemgreysel';"); 
         }
         else
         {
            eval("document.getElementById('div_opt_t_"+i+"').style.visibility='hidden';");
            eval("document.getElementById('div_opt_t_"+i+"').style.display='none';");  
            eval("document.getElementById('div_opt_"+i+"').style.visibility='hidden';");
            eval("document.getElementById('div_opt_"+i+"').style.display='none';");  
            eval("document.getElementById('td_r_"+i+"').className='itemgreynosel';"); 
         }
    }
    
}
function ExpandOption(div_id)
{
    var is_vis = eval("is_vis = document.getElementById('"+div_id+"').style.display");
        if (is_vis=='none')
         {
            eval("document.getElementById('"+div_id+"').style.visibility='visible';");
            eval("document.getElementById('"+div_id+"').style.display='inline';");  
         }
         else
         {
            eval("document.getElementById('"+div_id+"').style.visibility='hidden';");
            eval("document.getElementById('"+div_id+"').style.display='none';");  
         }
}