function toggle_ticker_form(state, field_id) {
element = document.getElementById(field_id);
if(field_id != 'ticker_link') document.getElementById('ticker_link').disabled = true;
if(field_id != 'ticker_body') document.getElementById('ticker_body').disabled = true;
if(field_id != 'ticker_file') document.getElementById('ticker_file').disabled = true;
if(state) {
element.disabled = false;
element.focus();
} else {
element.disabled = true;
}
}