
    /*$RCSfile: validateByte.js,v $ $Revision: 1.1 $ $Date: 2010/01/13 11:51:58 $ */
    /**
    * Check to see if fields are a valid byte.
    * Fields are not checked if they are disabled.
    * <p>
    * @param form The form validation is taking place on.
    */
    function validateByte(form) {
        var bValid = true;
        var focusField = null;
        var i = 0;
        var fields = new Array();
        var formName = form.getAttributeNode("name"); 
        oByte = eval('new ' + formName.value + '_ByteValidations()');

        for (x in oByte) {
            var field = form[oByte[x][0]];

            if ((field.type == 'hidden' ||
                field.type == 'text' ||
                field.type == 'textarea' ||
                field.type == 'select-one' ||
                field.type == 'radio')  &&
                field.disabled == false) {

                var value = '';
                // get field's value
                if (field.type == "select-one") {
                    var si = field.selectedIndex;
                    if (si >= 0) {
                        value = field.options[si].value;
                    }
                } else {
                    value = field.value;
                }

                if (value.length > 0) {
                    if (!isAllDigits(value)) {
                        bValid = false;
                        if (i == 0) {
                            focusField = field;
                        }
                        fields[i++] = oByte[x][1];

                    } else {

                        var iValue = parseInt(value);
                        if (isNaN(iValue) || !(iValue >= -128 && iValue <= 127)) {
                            if (i == 0) {
                                focusField = field;
                            }
                            fields[i++] = oByte[x][1];
                            bValid = false;
                        }
                    }
                }

            }
        }
        if (fields.length > 0) {
           focusField.focus();
           alert(fields.join('\n'));
        }
        return bValid;
    }
    
    