var currentFontSize = 76;
function changeFontSize ( size ) {
  currentFontSize += size * 10;
  if ( currentFontSize < 46  ) { currentFontSize = 46; } else
  if ( currentFontSize > 306 ) { currentFontSize = 306; }
  document.cookie = "fontsize=" + currentFontSize;
  document.body.style.fontSize = currentFontSize + '%';
}
function tableBorder() {
 var tables = document.getElementById('midCenter').getElementsByTagName('table');
 for (n = 0, tLen = tables.length; n < tLen; n++) {
  if (tables[n].className == 'insTable') {
   var tds = tables[n].getElementsByTagName('tr')[0].getElementsByTagName('td');
   tds[tds.length-1].className = 'lastTd';
  }
 }
}