Tasto sfoglia attributo accept

[Longuflumini]

<script language="javascript">
function ControllaFile(ff){
    nomefile = ff.FILE1.value
    re=/\.(gif|jpg)$/i
    if(re.test(nomefile))
        return true
    else{
        alert('Formato file non valido!')
        return false
    }
}
</script>