function showHideTable(my){
    el = document.getElementById('more_table'); 
    link = document.getElementById('link_more');
    if(el.style.display == 'none'){
       el.style.display = '';
       link.innerHTML = "- More";
    }
    else{
       el.style.display = 'none';
       link.innerHTML = "+ More";
    }
}