var COOKIE_NAME = "font_size_preview";
var COOKIE_EXPIRES = 7;

function get_cookie(cookie_name)
{
  //This function has been modified from an example at W3Schools
  if (document.cookie.length > 0)
  {
    start = document.cookie.indexOf(cookie_name);
  
    if (start != -1)
    { 
      start += cookie_name.length + 1; 
      end = document.cookie.indexOf(";", start);        
      if (end == -1)
      {
        end = document.cookie.length;  
      }
      
      var cookie_value = document.cookie.substring(start, end);        
      
      return unescape(cookie_value);
    } 
  }
  
  return null;
}

function set_cookie(cookie_name, cookie_value, expire_days)
{
  var str = cookie_name + "=" + escape(cookie_value) + "; ";
  
  var expire_date = new Date();
  expire_date.setDate(expire_date.getDate() + expire_days);
  
  str += "expires=" + expire_date.toGMTString() + "; path=/;";
  
  document.cookie = str;
}



function CSScheck() {
    size = get_cookie(COOKIE_NAME);
    if (size!=null) {
    changeCSS(size, 0);

}
}

function colorSwitch(id, color) {
    element = document.getElementById('divFor' + id);
    element.style.background = color;
}