function font_size(size){ 
	var size_data = new Array();

	size_data['large']  = '14px';
	size_data['middle'] = '13px';
	size_data['small']  = '12px';

	if (!size_data[size]){ size = 'middle'; }

	document.body.style.fontSize = size_data[size];

	var cookie = "size="+ escape(size) +";expires=Tue, 1-Jan-2030 00:00:00 GMT;path=/;";
	document.cookie = cookie;
}

window.onload = function(){

	var cookie = ' ' + document.cookie +';';
	var key = 'size=';
	var i = cookie.indexOf(key);

	if (i != -1){
		i += key.length;
		var j = cookie.indexOf(';', i);
		var size = cookie.substring(i, j);

		font_size(unescape(size));
	}
}