function convert(mForm) {
// console.log(mForm);
var fromField = jQuery(mForm).find('input[name="fromField"]');
var fromField_value = jQuery(fromField).val();

var fromUnits = jQuery(mForm).find('select[name="fromUnits"]');
var fromUnits_value = jQuery(fromUnits).val();

var toUnits = jQuery(mForm).find('select[name="toUnits"]');
var toUnits_value = jQuery(toUnits).val();

/*

mForm.toField.value = convertUnits(
        parseFloat(mForm.fromField.value),
        mForm.fromUnits.options[mForm.fromUnits.selectedIndex].value,
        mForm.toUnits.options[mForm.toUnits.selectedIndex].value);
*/

var calculated_value = convertUnits(fromField_value , fromUnits_value, toUnits_value )

var toField = jQuery(mForm).find('input[name="toField"]');
jQuery(toField).val(calculated_value);


}

function convertUnits(value, fromUnitFact, toUnitFact) {
    return (value * fromUnitFact / toUnitFact);
}

function convertTemp(mForm) {
    var kTemp = 0.0;
 
var fromField = jQuery(mForm).find('input[name="fromField"]');
var fromField_value = jQuery(fromField).val();

var fromUnits = jQuery(mForm).find('select[name="fromUnits"]');
var fromUnits_value = jQuery(fromUnits).val();

var toUnits = jQuery(mForm).find('select[name="toUnits"]');
var toUnits_value = jQuery(toUnits).val();
 


    if (fromUnits_value  == toUnits_value ) {
        // mForm.toField.value = mForm.fromField.value;
        var toField = jQuery(mForm).find('input[name="toField"]');
        jQuery(toField).val(fromField_value );
    }
    else {
        // first convert to Kelvin
        if (fromUnits_value  == 'F') {
            kTemp = ((parseFloat(fromField_value ) - 32) * 5 / 9) + 273.16;
        } else if (fromUnits_value == 'C') {
            kTemp = parseFloat(fromField_value ) + 273.16;
        } else if (fromUnits_value == 'K') {
            kTemp = parseFloat(fromField_value );
        }
        // now convert to desired units
        if (toUnits_value == 'F') {
            var calculated_value = (kTemp - 273.16) * 9 / 5 + 32;
            var toField = jQuery(mForm).find('input[name="toField"]');
            jQuery(toField).val(calculated_value);

        } else if (toUnits_value == 'C') {
           var calculated_value = kTemp - 273.16;
            var toField = jQuery(mForm).find('input[name="toField"]');
            jQuery(toField).val(calculated_value);


        } else if (toUnits_value == 'K') {
            var calculated_value = kTemp;
            var toField = jQuery(mForm).find('input[name="toField"]');
            jQuery(toField).val(calculated_value);
        }
    }
}