Okay i saw where i made the error sorry.
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<script language="javascript">
function popup(url,width,height){
window.open(url,"def","width="+width+",height="+height)
}
</script>
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the you call the function in the area(like before - but no errors this time hehe)
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<area shape="rect" coords="251,262,355,279" href="javascript
:popup('Whatever.html','550','360')">
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This should work hehe