//Change font size by swaping out css
function addStyle(href, idname) 
{ 
  var style 				= document.createElement("link"); 
  style.rel 				= "stylesheet"; 
  style.type 				= "text/css"; 
  style.href 				= href; 
  style.media 				= "screen"; 
  style.id 					= idname; 
  document.getElementsByTagName("head")[0].appendChild(style); 
} 

var lastStyleID				= "";
var changeFontSize			= function(id) {
	var style = '';
	if(lastStyleID!="") {
		document.getElementsByTagName("head")[0].removeChild(document.getElementById(lastStyleID));
		//$(lastStyleID).remove();
	}
	
	addStyle('/css/'+id+'.css', id);
	//setOnClick(id);
	lastStyleID = id;
	createCookie('customfontsize',id,7);
}

//COOKIE for fontsize
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);
}

function setOnClick(curr) {
	var tempInc, tempDec;
	if (curr != '') {
		switch(curr) {
			case "user2":
				tempInc = 'user3';
				tempDec = 'user1';
				break;   
			case "user3":
				tempInc = 'user3';
				tempDec = 'user2';
				break;
			default:
				tempInc = 'user2';
				tempDec = 'user1';
		}
		//alert('curr: '+curr+', tempInc: '+tempInc+', tempDec: '+tempDec);
		if(jQuery('a#declink')) {
			jQuery("a#declink").attr('onclick', 'javascript:changeFontSize(\''+ tempDec +'\')');
		}
		if(jQuery('a#inclink')) {
			jQuery("a#inclink").attr('onclick', 'javascript:changeFontSize(\''+ tempInc +'\')');
		}
	}
}