function ch_vis(id)
{
  var obj = document.getElementById(id);
  if(obj)
  {
    var vis = obj.style.display;
    
    if(vis == 'none')
      vis = 'block';
    else
      vis = 'none';

    obj.style.display = vis;
  }
}

function set_sel(id)
{
  if(curr_cat_razd != id)
  {
    var obj = document.getElementById('razd_'+id);
    if(obj)
      obj.className = 'cat_razd_sel';
  }
}

function set_unsel(id)
{
  if(curr_cat_razd != id)
  {
    var obj = document.getElementById('razd_'+id);
    if(obj)
      obj.className = 'cat_razd';
  }
}

var frm_state = 0;
function change_arrow_frm()
{
  var src = '/images/main/open_arrow_cab.gif';
  if(frm_state)
    src = '/images/main/close_arrow_cab.gif';
  var obj = document.getElementById('frm_arrow'); 
  if(obj)
    obj.src = src;

  frm_state = !frm_state;
}