function changeFontSize(size) {
	//alert('test');
	var fontSizeSet = ['70%','85%','110%'];
	if ( size == 'N' ){
		if ( size = getCookie('fontsize') ){
			
			if ( isNaN(size) ){
				size = 1;
			}
		}else{
			size = 1;
		}
	}else{
		
		setCookie('fontsize',size);
	}
	
	document.getElementById('contents').style.fontSize = fontSizeSet[size];
	
	var addClass = ['small','normal','large'];
	
	$(addClass).each(function(){
		$('.' + this).removeClass('bot');
	})
	$('.' + addClass[size]).addClass('bot');
	
}

function setCookie(Data,Value){
	life = new Date();
	life.setTime(life.getTime() + 24*60*60*1000*30);
	document.cookie = Data + "=" + escape(Value) + "; expires=" + life.toGMTString() + "; path=/";
}

function getCookie(Data){
	var cookieArray = document.cookie.split("; ");
	for ( i=0; i<cookieArray.length; i++ ){
		var aCrumb = cookieArray[i].split("=");
		
		if ( Data == aCrumb[0] ){
			return unescape(aCrumb[1]);
			
		}
	}
	return null;
}

$(document).ready(function(){
	changeFontSize('N');
});