function articleBox(whichBox) {
  var tarsasag = document.getElementById("article-box-tarsasag");
  tarsasag.style.display = "none";
  
  var tarsasag2 = document.getElementById("tarsasag");
  tarsasag2.src= "common/images/menutab/tarsasag_off.gif"; 
  
  var forum = document.getElementById("article-box-forum");
  forum.style.display = "none";
  
  var forum2 = document.getElementById("forum");
  forum2.src= "common/images/menutab/forum_off.gif";    
  
  var programajanlo = document.getElementById("article-box-programajanlo");
  programajanlo.style.display = "none";
  
  var programajanlo2 = document.getElementById("programajanlo");
  programajanlo2.src= "common/images/menutab/programajanlo_off.gif";    
  
  var tanacsadas = document.getElementById("article-box-tanacsadas");
  tanacsadas.style.display = "none";
  
  var tanacsadas2 = document.getElementById("tanacsadas");
  tanacsadas2.src= "common/images/menutab/tanacsadas_off.gif";        
  
  var videotar = document.getElementById("article-box-videotar");
  videotar.style.display = "none";
  
  var videotar2 = document.getElementById("videotar");
  videotar2.src= "common/images/menutab/videotar_off.gif";     

  var box = document.getElementById("article-box-" + whichBox);
  box.style.display = "block";
  
  var imag = document.getElementById(whichBox);
  imag.src= "common/images/menutab/" + whichBox + "_on.gif";  
}