function cookieStore(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 cookieRetrieve(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.onload = function(e) {
var cookie = cookieRetrieve("size");
var size = cookie ? cookie : "small";
setFontSize(size);
//alert("l-size="+size);
}

window.onunload = function(e) {
//alert("u-size="+size);
  cookieStore("size", size, 365);
}

var cookie = cookieRetrieve("size");
var size = cookie ? cookie : "small";


function setFontSize(value) {
    	theStyle = null;
    	if (value == "small") theStyle 	= "100%";
    	if (value == "medium") theStyle 	= "120%";
    	if (value == "large") theStyle 	= "130%";
    	
    	if (theStyle) document.getElementsByTagName("body")[0].style.fontSize = theStyle;
    	
    	size=value;
}