/* fontsizeswitcher.js - 07/18/07 - JavaScript code that allows user to dynamically change font-size property of body tag.  Selected size is stored in a cookie on the user's browser  */

document.write('<div class="font-sizer">Text size:&nbsp;&nbsp;<a href="javascript:setFontSize(\'x-small\')" title="Small text" onMouseOver="window.status=\'View small text\';return true;" onMouseOut="window.status=\'\';return true;">S</a>&nbsp;&nbsp;<a href="javascript:setFontSize(\'small\')" title="Medium text" onMouseOver="window.status=\'View medium text\';return true;" onMouseOut="window.status=\'\';return true;">M</a>&nbsp;&nbsp;<a href="javascript:setFontSize(\'medium\')" title="Large text" onMouseOver="window.status=\'View large text\';return true;" onMouseOut="window.status=\'\';return true;">L</a></div><br class="clear" />')

function setFontSize(fs) {
var body=document.body;
body.style.fontSize=fs;
}

function getFontSize() {
  var body=document.body;
  fs=body.style.fontSize;
  return fs;
}

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);
  }
  return null;
}

FontSizeOnload = function(e) {
  var cookie = readCookie("fontsize");
  var fs = cookie ? cookie : getFontSize();
  setFontSize(fs);
}

window.onunload = function(e) {
  var title = getFontSize();
  createCookie("fontsize", fs, 365);
}

function addEventToObject(obj,evt,func) {
	var oldhandler = obj[evt];
	obj[evt] = (typeof obj[evt] != 'function') ? func : function(ev){oldhandler(ev);func(ev);};
}

addEventToObject(window,'onload',FontSizeOnload);