(function($){ 
	var min=8;
	var max=22;
	var standard=(readCookie('txtsize')==null)?12:readCookie('txtsize');

	function resetFontSize() {
		var p = document.getElementsByTagName('p');
		var li = $('#content li');

		for(i=0;i<p.length;i++) {
			p[i].style.fontSize = standard+"px";
		}
		for(i=0;i<li.length;i++) {
			li[i].style.fontSize = standard+"px";
		}
	}; 


	function increaseFontSize() {
		var p = document.getElementsByTagName('p');
		var li = $('#content li');
		for(i=0;i<p.length;i++) {
			if(p[i].style.fontSize) {
				var s = parseInt(p[i].style.fontSize.replace("px",""));
			} else {
				var s = 12;
			}
			if(s!=max) {
				s += 1;
			}
			p[i].style.fontSize = s+"px"
		}
		for(i=0;i<li.length;i++) {
			if(li[i].style.fontSize) {
				var s = parseInt(li[i].style.fontSize.replace("px",""));
			} else {
				var s = 12;
			}
			if(s!=max) {
				s += 1;
			}
			li[i].style.fontSize = s+"px"
		}
		createCookie('txtsize',s);
		fixHeight();
	}

	var fixHeight = function(){
		var r = $('#right');
		var l = $('#left');
		var e = $('.expand');

		var rl = 0;
		var ll = 0;
		var el = 0;
		var nl = 0;
		
		if(r.length) rl = r[0].scrollHeight;
		if(l.length) ll = l[0].scrollHeight;
		if(e.length) el = e[0].scrollHeight;

		if(rl >= nl) nl = rl;
		if(ll >= nl) nl = ll;
		if(el >= nl) nl = el;

		r.height(nl);
		l.height(nl);
		e.height(nl);
	};


	function decreaseFontSize() {
		var p = document.getElementsByTagName('p');
		var li = $('#content li');
		for(i=0;i<p.length;i++) {
			if(p[i].style.fontSize) {
			var s = parseInt(p[i].style.fontSize.replace("px",""));
			} else {
				var s = 12;
			}
			if(s!=min) {
				s -= 1;
			}
			p[i].style.fontSize = s+"px"
		}  
		for(i=0;i<li.length;i++) {
			if(li[i].style.fontSize) {
			var s = parseInt(li[i].style.fontSize.replace("px",""));
			} else {
				var s = 12;
			}
			if(s!=min) {
				s -= 1;
			}
			li[i].style.fontSize = s+"px"
		}  
		createCookie('txtsize',s); 
	}


	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;
	}

	window.resetFontSize = resetFontSize;
	window.readCookie = readCookie;
	window.createCookie = createCookie;
	window.increaseFontSize = increaseFontSize;
	window.decreaseFontSize = decreaseFontSize;
})(jQuery);