window.onload = function(){
	textChanger.init(); 	
}
var textChanger = {
cpanel : 'textchanger',  //set here the id of the element (div, p) within you want to insert the control panel
element : 'content',   //set here the id of the element (div, p) within you want to change the text
defaultFS : 1.1,       //set here the default font size in 'em'
init: function() {
var cpel = document.getElementById(textChanger.cpanel);
var el = document.getElementById(textChanger.element);
if (cpel == null || el == null) {alert('The elements with the \"'+textChanger.cpanel+'\" and/or \"'+textChanger.element+'\" ID do not exist in HTML source.');} else {
var u = document.createElement('div');
cpel.appendChild(u);
u.innerHTML = 
''+
''
var sz = textChanger.getCookie('size');
el.style.fontSize = sz ? sz + 'em' : textChanger.defaultFS + 'em';
var incr = document.getElementById('increase');
incr.onclick = function(){textChanger.changeSize(1);return false;};
var decr = document.getElementById('decrease');
decr.onclick = function(){textChanger.changeSize(0);return false;};
}
} ,
changeSize: function(val) {
var el = document.getElementById(textChanger.element);
var size = el.style.fontSize.substring(0,3);
var fSize = parseFloat(size,10);
if (val == 1) {
fSize += 0.11;
if (fSize > 2.0) fSize = 2.0;
} else {
fSize -= 0.11;
if (fSize < 0.5) fSize = 0.5;
}		
el.style.fontSize = fSize + 'em';
textChanger.updateCookie('size',fSize);
} ,
updateCookie: function(type,vl) {
var today = new Date();
var exp = new Date(today.getTime() + (365*24*60*60*1000)); //the cookie will expire in one year  
var vlck = textChanger.getCookie('all');
var vltype = textChanger.getCookie(type);
if(vlck && vlck.indexOf(type) != -1) {   	 
vlck = vlck.replace(vltype,vl); } else {  
if (!vlck) {vlck = '';}
vlck += type + '=' + vl + '&';
}		
document.cookie = 'textChanger=' + vlck + ';' +'expires=' + exp.toGMTString() + ';' +'path=/';
} ,
getCookie: function(type) { 
var cname = 'textChanger=';	
var start = document.cookie.indexOf(cname);
var len = start + cname.length;
if ((!start) && (cname != document.cookie.substring(0,cname.length))) {return null;}
if (start == -1) return null;
var end = document.cookie.indexOf(";",len);
if (end == -1) end = document.cookie.length;
var vlck = document.cookie.substring(len, end);
if(type=='all') {
return vlck; } else { 
var tname = type + '=';
var startTC = vlck.indexOf(tname);
var lenTC = startTC + tname.length;
if ((!startTC) && (tname != vlck.substring(0, tname.length))) {return null;}
if (startTC == -1) return null;
var endTC = vlck.indexOf("&", lenTC);
if (endTC == -1) endTC = vlck.length;
return unescape(vlck.substring(lenTC, endTC));
}	
}
}