function iui_toggle(field_name) {
var current_value = document.getElementById(field_name).value;
if (current_value == '') { document.getElementById(field_name).value = 'true'; } else { document.getElementById(field_name).value = ''; }
} // end if

function validate_field(field) {
label_id = field.name+'_label';
field_label = document.getElementById(label_id);
if (field.name=='category') {
if (field.options[field.selectedIndex].value == '') { field_label.className="red"; return false; } else { field_label.className="black"; return true; }
} else {
if (field.value==null || field.value=="" || field.value==0) { field_label.className="red"; return false; } else { field_label.className="black"; return true; }
} // end if not category
} // end function

function validate_form() {
var errorCount = 0;

with (document.getElementById('addFood')) {
if (validate_field(description)==false) { errorCount++; }
if (validate_field(category)==false) { errorCount++; }
if (validate_field(calories)==false) { errorCount++; }
if (validate_field(grams_1)==false) { errorCount++; }

if (errorCount==0) {
submit2.disabled = false; submit2.className='whiteButton'; submit2.value=default_button_text.value;
} else {
submit2.disabled = true; submit2.className='redButton'; submit2.value = errorCount + ' required fields empty!';
} // end if readytogo

} // end with this form

} // end function