function updateFontSize(newSize) {
	if ( (document.body.style.fontSize == '') || (newSize== undefined) ) document.body.style.fontSize = '10px';
	else document.body.style.fontSize = newSize+ 'px';
	if ( parseInt( document.body.style.fontSize ) < 8 ) document.body.style.fontSize = '8px';
	createCookie('fontSize',newSize,365);
}
//mootools addEvent
document.addEvent( 'domready' , function() {
	document.body.style.fontSize = '10px';
	var cookieFontSize = readCookie('fontSize');
	if ( cookieFontSize != null ) {
		updateFontSize( cookieFontSize );
	}
} );

function increaseFontSize() {
	newSize = 10;
	if ( document.body.style.fontSize == '10px' ) newSize = 12;
	if ( document.body.style.fontSize == '12px' ) newSize = 14;
	if ( document.body.style.fontSize == '14px' ) newSize = 16;
	if ( document.body.style.fontSize == '16px' ) newSize = 10;
	updateFontSize( newSize );
}
function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}
function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}
function eraseCookie(name) {
	createCookie(name,"",-1);
}