function include_css (accessibility_type) {
	
  activate_font_size(accessibility_type);

	var css  = document.createElement('link');
	css.rel = 'stylesheet'
	css.type = 'text/css';
	css.href = 'templates/sznaters/css_accessibility_helper/' + accessibility_type + '.css';
	document.getElementsByTagName('head')[0].appendChild(css);
	
	// ajax request to save
  new Ajax.Request('templates/sznaters/ajax_handler.php?ajax_accessibility=' + accessibility_type);

}


function activate_font_size (accessibility_type) {
  
  $('regular').style.color = '#999999';
  $('big').style.color = '#999999';
  $('bigger').style.color = '#999999';
  $(accessibility_type).style.color = '#000000';  
  
}