function show_row(el, el2) {
           if (document.getElementById('sub' + el)!=null) {        
               if (document.getElementById('sub' + el).style.display == 'none') {
                   document.getElementById('sub' + el).style.display = 'block';
                   document.getElementById('main' + el).style.color = '#eca519';
               }
               else {
                   document.getElementById('sub' + el).style.display = 'none';
                   document.getElementById('main' + el).style.color = '#000000';
               }
               if (el2 != 0) {
                   document.getElementById('sub' + el + '_link' + el2).style.color = '#eca519';
                   document.getElementById('main' + el).style.color = '#000000';
               }
           }
           
     }