function changeSize(which,obj){

var all_pre=document.getElementsByTagName("pre")

for(i=0;i<all_pre.length;i++){
  if(document.getElementsByTagName("pre")[i].id=="stats"){
    document.getElementsByTagName("pre")[i].className=which;
  }
}

//  document.getElementById('stats').className=which;
  document.getElementById('link_sm').className="cell_off";
  document.getElementById('link_med').className="cell_off";
  document.getElementById('link_lar').className="cell_off";

  if(which=="font_small"){
  document.getElementById('link_sm').className="cell_on";
  }else if(which=="font_medium"){
  document.getElementById('link_med').className="cell_on";
  }else if(which=="font_large"){
  document.getElementById('link_lar').className="cell_on"; 
  }
}