<script>
function getFileExtension(filename) {
return ((/[.]/.exec(filename)) ? /[^.]+$/.exec(filename) : undefined).toString().toLowerCase();
}
</script>
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<script>
function getFileExtension(filename) {
return ((/[.]/.exec(filename)) ? /[^.]+$/.exec(filename) : undefined).toString().toLowerCase();
}
</script>