function increaseFontSize() {

  var className = getClassName();

  if ('small' == className) {

    d('content').className = 'normal';

	d('sidebar').className = 'normal';

  }

  else if ('normal' == className) {

    d('content').className = 'large';

	d('sidebar').className = 'large';

  }

  else if ('large' == className) {

    d('content').className = 'xlarge';

	d('sidebar').className = 'xlarge';

  }

}



function decreaseFontSize() {

  var className = getClassName();

  if ('normal' == className) {

    d('content').className = 'small';

	d('sidebar').className = 'small';

  }

  else if ('large' == className) {

    d('content').className = 'normal';

	d('sidebar').className = 'normal';

  }

  else if ('xlarge' == className) {

    d('content').className = 'large';

	d('sidebar').className = 'large';

  }

}



function getClassName() {

  return d('content').className;

  return d('sidebar').className;

}



function d(id) {

  return document.getElementById(id);

}