To include this FX in your document you need to put the the following in the HEAD section of your document

<!-- *** BEGIN CUT - Start Code *** -->
<!-- (* Another free JavaScript © from JavaScript-FX.com *) -->
<SCRIPT LANGUAGE="javascript" SRC="javascript/JSFX_Layer.js"></SCRIPT>
<SCRIPT LANGUAGE="javascript" SRC="javascript/JSFX_Browser.js"></SCRIPT>
<SCRIPT LANGUAGE="javascript" SRC="javascript/JSFX_PlayField.js"></SCRIPT>
<SCRIPT LANGUAGE="javascript" SRC="javascript/JSFX_Wavy.js"></SCRIPT>
<SCRIPT LANGUAGE="javascript" TYPE="text/javascript">
<!--
function JSFX_StartEffects()
{
     
JSFX.Wavy("images/my_image.gif", 8, 8, 100, 200);
}

//-->
</SCRIPT>
<!-- *** END CUT - End Code *** -->

Put the following in the BODY TAG of your document

<BODY onLoad="JSFX_StartEffects()">

Customization.
Param1: "images/my_image.gif" - Change this to your custom image.
Param2: 8 - Number of images in the X direction.
Param3: 8 - Number of images in the Ydirection.
Param4: 100 - The X co-ordinate for the centre of the "square"
Param5: 200 - The Y co-ordinate for the centre of the "square"

Also See...
Using External ".js" Files
Combining Multiple Scripts.