//---thanks to alistapart

//-----------------------------------------------------------------------------setActiveStyleSheet

function setActiveStyleSheet (cssFileName) {
   href = 'http://www.racc.ac.uk/sites/all/themes/racc/fontsize/' + cssFileName + '.css';
//alert (href);
   document.getElementById ("bodyCSS").href = href;
   return null;
}

//-----------------------------------------------------------------------------getActiveStyleSheet

function getActiveStyleSheet() {
   href = document.getElementById ("bodyCSS").href;
   x = href.lastIndexOf('/') + 1;
   y = href.lastIndexOf('.')
   cssFileName = href.substring(x, y);
//alert ('cssFileName = ' + cssFileName);
   return cssFileName;
}

//-----------------------------------------------------------------------------getPreferredStyleSheet

function getPreferredStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1
       && a.getAttribute("rel").indexOf("alt") == -1
       && a.getAttribute("title")
       ) return a.getAttribute("title");
  }
  return null;
}

//-----------------------------------------------------------------------------changeFontSize

function changeFontSize (fontSize) {
  switch (fontSize)
     {
      case 1 : setActiveStyleSheet('smallfont'); break;
      case 2 : setActiveStyleSheet('mediumfont'); break;
      case 3 : setActiveStyleSheet('largefont'); break;
     }


}

//-----------------------------------------------------------------------------displayFontSizeButtons



//-----------------------------------------------------------------------------onLoad