how to check javascript preloader worth or not
<p>hi am using this snippet for preload image using javascript </p>

<pre><code>window.onload=function(){

heavyImage.src = "images/qq-lookupbody-holder.png"; (ON PAGE LOAD)

}
</code></pre>

<p>But am not find any different after i added this js snippet, </p>

<p>Is there any way to check , the preloader  script is really worht or not....</p>
