Friday, July 20, 2007

Forcing an image to refresh 

http://www.codingforums.com/showthread.php?t=35507
<script type="text/javascript">
<!--//
  function noCache(){
    var myImage = new Image();	
        myImage.src = 'Welcome.jpg';
    var clocktime = new Date();
    var utchours = clocktime.getUTCHours();
    var utcminutes = clocktime.getUTCMinutes();
    var utcseconds = clocktime.getUTCSeconds();
    var utcyear = clocktime.getUTCFullYear();
    var utcmonth = clocktime.getUTCMonth()+1;
    var utcday = clocktime.getUTCDate();
    var utctime = utcyear+''+utcmonth+''+utcday;
        utctime += utchours+''+utcminutes+''+utcseconds;
 
      isNew = myImage.src;
        if(!isNew.match('#')){
           document.images['noCache'].src = myImage.src+'?'+utctime;
        }
      else{document.images['noCache'].src = document.images['noCache'].src;
    }
  }
 //-->
</script>
</HEAD>

<BODY onload="noCache()">
<img name="noCache" src="Welcome.jpg" width="" height="" alt="">