var fontsize = 100.01;

function setFontsize(size) {

  if (navigator.cookieEnabled) {

    var cookie;

    

    if (size == 'clear') {
      fontsize = 100.01;
	  cookie = true;
    } else if (size == 'restore') {
	  fontsize = get_cookie('fontsizeR');
      cookie = false;
    } else {
      fontsize = (fontsize*1.0 + size*1.0);
	  cookie = true;
    }
	if (fontsize == undefined) {
      fontsize = 100.01;
	  cookie = true;
	}
    	
    if (cookie) {
		var current_date = new Date;
		var cookie_year = current_date.getFullYear ( ) + 1;
		var cookie_month = current_date.getMonth ( );
		var cookie_day = current_date.getDate ( );		
		set_cookie ( "fontsizeR", fontsize, cookie_year, cookie_month, cookie_day );
		fontsize = get_cookie('fontsizeR');
    }

    var html = document.getElementsByTagName('html')[0];
    html.style.fontSize = (fontsize + '%');

  }

}