jscript not working

We need to be able to standardize email address text value format (full UPPER of full LOWER) at time of input, in order for field to be properly be used as indexed field during searches. We came across the following code to be appplied from the web applet configuration:

<script>
function uppercaseInput()
{
    var INPUT_ID = "LeadCreateEditForm.Company Name";

    var elem = document.getElementById(INPUT_ID);
    if( elem != null )
    {
        elem.style.textTransform = "uppercase";
        try {
            elem.addEventListener('keyup',function (e) { INPUT_ID.value=this.value.toUpperCase();}, true);
            }
        catch(e){
             elem.attachEvent('onkeyup', function (e) { INPUT_ID.value=this.value.toUpperCase(); });
         }
    }
}

setTimeout ( "uppercaseInput()",2000 );

</script>