/*
 Used to fulfill the accessibility requirements to allow text size to
 be increased or decreased by the user.
*/
function increaseFontSize( increase ) {
   var p = document.getElementsByTagName('p');
   for(i=0;i<p.length;i++) {
      if(p[i].style.fontSize) {
         var s = parseInt(p[i].style.fontSize.replace("px",""));
      } else {
         var s = 12;
      }
      s += increase;
      p[i].style.fontSize = s+"px"
   }
}