window.onload = function() {
  initControlPageUp();
  textSize();
//  initExternalLinks();
  //surf_and_edit();
}

var currentlyVisibleSelect='';

function enableSelect(id)
{
  if(currentlyVisibleSelect!='')
  {
    var oldseldiv = document.getElementById('select_'+currentlyVisibleSelect);
    oldseldiv.firstChild.disabled=true;
    oldseldiv.firstChild.style.display='none';
  }
  if(id!='')
  {
    var seldiv = document.getElementById('select_'+id);
    seldiv.firstChild.disabled=false;
    seldiv.firstChild.style.display='';
    currentlyVisibleSelect = id;
  }
  else
  {
    currentlyVisibleSelect = '';
  }
}