function regmap(a,region,text,alt) {
    as = document.getElementsByTagName('a');
    for (var i=0; i<as.length; i++) {
      if (as[i].parentNode.parentNode == a.parentNode.parentNode) {
         as[i].style.backgroundColor = '';
         as[i].style.color = 'black';
         as[i].parentNode.style.backgroundColor = '';
         as[i].parentNode.style.color = 'black';
      }
    }
    a.style.backgroundColor = '#1C525E';
    a.parentNode.style.backgroundColor = '#1C525E';
    a.style.color = 'white';
    a.parentNode.style.color = 'white';
    obj = document.getElementById('regmapimg');
    obj.src = '../images/networks/map' + region + '.png';
    obj.alt = alt;
    
    obj = document.getElementById('regmapdesc');
    obj.innerHTML = text;
  }