The JavaScript Source: Games: Ants
Our web spider found the following code snippet at javascript_internet_com and contains information about atan2 and JavaScript. 
t;script language="JavaScript">
createLoadBar(240, 20, 1, "#000000", "#cccccc", "#999999", "MS Sans serif,Arial,Helvetica", 1, "<b>Loading ants, please wait...</b>");
</script>

<div id="ant1" class="ant"><img name="antimg1" src="transparent.gif" width=13 height=13></div>
<div id="ant2" class="ant"><img name="antimg2" src="transparent.gif" width=13 height=13></div>
<div id="ant3" class="ant"><img name="antimg3" src="transparent.gif" width=13 height=13></div>
<div id="ant4" class="ant"><img name="antimg4" src="transparent.gif" width=13 height=13></div>
<div id="ant5" class="ant"><img name="antimg5" src="transparent.gif" width=13 height=13>
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