JQuery Tutorial 28 - increase and decrease Font size with an example

Code:
<html lang="en">
<head>
 <title>JQueryexamplecode.blogspot.com</title>
   <script src="js/jquery.js" type="text/javascript"></script>
</head>
<body>
Font size <a href="https://www.blogger.com/blogger.g?blogID=6795235206473427689#" id="incr">Increase</a> <a href="https://www.blogger.com/blogger.g?blogID=6795235206473427689#" id="decr">Decrease</a> 
 <div>
 aspnettutorialonline.blogspot.com</div>
<div>
 jqueryexamplecode.blogspot.com</div>
<script>
  $('#incr').click(function(){
   IncreaseOrDecrease($('div'),"incr");
  });
  $('#decr').click(function(){
   IncreaseOrDecrease($('div'),"decr");
  });
  function IncreaseOrDecrease(element,order){
   var currentFontSize=parseInt(element.css('font-size'));
   if(order=='incr'){
    element.css("font-size",currentFontSize+4 +"px");
   }else if(order=='decr'){
    element.css("font-size",currentFontSize-4 +"px");
   }
  }
 </script>

</body>                                                                                    
</html>
Output:

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