// JavaScript Document

function setBodySize(theSize){
	var theBody=document.getElementsByTagName('body');
	theBody[0].style.fontSize=theSize+"em";
	createCookie('preferedTextSize',theSize);
}

if(readCookie('preferedTextSize')){
		var preferedTextSize=readCookie('preferedTextSize');
	}


function maketxtControl(theDiv){
if (!document.getElementById(theDiv)) return false;
	var wrapper=document.getElementById(theDiv);
	var addHtml='<div id="txtControl">Text Sizes: <a href="#" onclick="setBodySize(\'0.75\');" class="btn small" >s</a> <a href="#" onclick="setBodySize(\'1.0\');" class="btn large" >l</a></div>';
	wrapper.innerHTML=wrapper.innerHTML+addHtml;
}

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 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);
  }
 }

function loadfunctions(){
	maketxtControl('image');
	if(preferedTextSize){
		setBodySize(preferedTextSize);	
	}
}
window.onload=loadfunctions;