function treemenu(id,idBlok,img_dir,img_min,img_plus,img_open,img_close){
  if(document.getElementById(idBlok).style.display == 'block'){
    document.getElementById(idBlok).style.visibility = 'hidden';
    document.getElementById(idBlok).style.display = 'none';
    document.getElementById(id).innerHTML =
			 "<img src=\""+img_dir+img_plus+"\">";//<img src='"+img_dir+img_close+"' class=\"treemenu\">";
  }else{
    document.getElementById(idBlok).style.visibility = 'visible';
    document.getElementById(idBlok).style.display = 'block';
    document.getElementById(id).innerHTML =
    	"<img src=\""+img_dir+img_min+"\">";//<img src='"+img_dir+img_open+"' class=\"treemenu\">";

  }
}