var max_seminarista_id = 1;
  var pocet_seminaristu = 0;
  var volnych_mist = 999;
  
  function pridejCloveka(id)
  {
      if(pocet_seminaristu < volnych_mist) { 
          var novyClovek = document.createElement("div");
          novyClovek.setAttribute('id', 'seminarista'+id);
          novyClovek.className = 'seminar';
          novyClovek.innerHTML =
     		     "<label for='name'>Jméno <strong>*</strong></label>" +
           	    "<input name='name[]' type='text' id='name"+id+"' />" +
         	     "<label for='surname'>Příjmení <strong>*</strong></label>" +
     		 	    "<input name='surname[]' type='text' id='surname"+id+"' />" +
               "<label for='phone'>Tel.</label>" +
           	    "<input name='phone[]' type='text' id='phone"+id+"' class='phone' />" +
               "<label for='funkce'>Pozice</label>" +
         	 	    "<input name='pozice[]' type='text' id='pozice"+id+"' />" +
                  "<img src='img/bt-delete.gif' alt='ODSTRANIT' onclick='odstranCloveka("+id+")' />";

          document.getElementById('seminariste').appendChild(novyClovek);
          pocet_seminaristu++;
      } 
      
      if(pocet_seminaristu >= volnych_mist) {
        document.getElementById("pridavaci_tlacitko").style.visibility = "hidden";
      } 
  }
  
  function odstranCloveka(id)
  {
    odstranovany = document.getElementById("seminarista"+id);
    document.getElementById("seminariste").removeChild(odstranovany);
     
    if(pocet_seminaristu == volnych_mist) {
        document.getElementById("pridavaci_tlacitko").style.visibility = "visible";
    }
    
    pocet_seminaristu--;         
  }