var min=12;
var max=18;

function ActionTextSize(action, elementName)
{
   var element = document.getElementById(elementName); 
   
   ChangeTextSize(action, element, 'a');
   ChangeTextSize(action, element, 'ul');
   ChangeTextSize(action, element, 'li');
   ChangeTextSize(action, element, 'div');
   ChangeTextSize(action, element, 'span');
   ChangeTextSize(action, element, 'p');
   ChangeTextSize(action, element, 'tbody');
   ChangeTextSize(action, element, 'table');
   ChangeTextSize(action, element, 'td');
   ChangeTextSize(action, element, 'font');

   CreateCookie("FontSize", s, 30);

/*
   var element = document.getElementsByTagName('div');
   for (position = 0; position < element.length; position++)
   {
     if ( element[position].getAttribute("id") == "SetFontSize" )
     {
       var childElement = element[position];

       ChangeTextSize(action, childElement, 'a');
       ChangeTextSize(action, childElement, 'ul');
       ChangeTextSize(action, childElement, 'li');
       ChangeTextSize(action, childElement, 'div');
       ChangeTextSize(action, childElement, 'span');
       ChangeTextSize(action, childElement, 'p');
       ChangeTextSize(action, childElement, 'tbody');
       ChangeTextSize(action, childElement, 'table');
       ChangeTextSize(action, childElement, 'td');
       ChangeTextSize(action, childElement, 'font');

       CreateCookie("FontSize", s, 30);
     }
   }
   */
}
function ChangeTextSize(action, element, elementName)
{
  var childElement = element.getElementsByTagName(elementName);
  for (position = 0; position < childElement.length; position++)
  {
      if(childElement[position].style.fontSize)
      { var s = parseInt(childElement[position].style.fontSize.replace("px","")); }
      else
      { var s = 12; }

      if ( action == "+" )
      {
        if(s!=max)
        { s += 1; }
      }
      else if (action == "-" )
      {
        if(s!=min)
        { s -= 1; }
      }

      childElement[position].style.fontSize = s + "px"
   }
}
function ChangeFontSize()
{
  var fontSize = ReadCookie("FontSize");
  var p = document.getElementsByTagName('p');
  if (fontSize != null)
  {
    for(i=0;i<p.length;i++)
    {
      p[i].style.fontSize = fontSize + "px"
    }
  }
}
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;
}