var sisp;
sisp = (function(){
    var toggle;
    var showElement;
    var hideElement;
    var trim;
    var amountValue;
    var merchantRef;
    var taxRate;
    var qtyValue;
    var subValue;
    var taxValue;
    var totalValue;
    var quantity;
    var costDiv;
    var displayAmount;
    var displaySub;
    var displayTax;
    var displayTotal;
    var subTotal;
    var tax;
    var total;
    var amount;
    var courseSelector;
    var setOrder;
    var roundUp;
    var displayCurrency;
    var updateAmount;
    var updateOrder;
    var goDeposit;
    var goDPS;
    var validate;
    
    // Registration order processing
    amountValue = 0.0;
    merchantRef = "[NO ORDER]";
    taxRate = 12.5;
    qtyValue = null;
    subValue = 0;
    taxValue = 0;
    totalValue = 0;
    quantity = null;
    costDiv = null;
    displayAmount = null;
    displaySub = null;
    displayTax = null;
    displayTotal = null;
    subTotal = null;
    tax = null;
    total = null;
    amount = null;
    courseSelector = null;
    
    // Show/Hide an element
    toggle = function(element){
        var obj = document.getElementById(element);
        if (obj.style.display !== 'none') {
            obj.style.display = 'none';
        }
        else {
            obj.style.display = '';
        }
    };
    
    // Show an element on the page
    showElement = function(element){
        var obj = document.getElementById(element);
        obj.className = 'visible';
    };
    
    // Hide an element on the page 
    hideElement = function(element){
        var obj = document.getElementById(element);
        obj.className = 'hidden';
    };
    
    // Remove leading and training spaces from a string
    trim = function(str){
        str = str.replace(/(^\s+)|(\s+$)/g, '');
        return str;
    };
    
    setOrder = function(){
        quantity = document.getElementById('quantity');
        displayAmount = document.getElementById('displayAmount');
        displaySub = document.getElementById('displaySub');
        displayTax = document.getElementById('displayTax');
        merchantRef = document.getElementById('merchantreference');
        displayTotal = document.getElementById('displayTotal');
        subTotal = document.getElementById('subTotal');
        tax = document.getElementById('tax');
        total = document.getElementById('total');
        amount = document.getElementById('amount');
        quantity.value = '';
        displayAmount.innerHTML = '$' + displayCurrency(amountValue);
        amount.value = amountValue;
        courseSelector = document.getElementById('courseTypeList');
        
        updateOrder(quantity);
    };
    
    roundUp = function(data, points){
        var factor = Math.pow(10, points);
        return Math.round(data * factor) / factor;
    };
    
    displayCurrency = function(data){
        var dt = data.toString(10);
        var point = dt.indexOf('.');
        if (point < 0) {
            dt += '.00';
        }
        else {
            var integer = dt.substring(0, point);
            var decimal = dt.substring(point + 1);
            decimal = (decimal.length < 2) ? decimal + '0' : decimal;
            dt = integer + '.' + decimal;
        }
        return dt;
    };
    
    updateAmount = function(input){
        switch (input.value) {
            case "si":
                amountValue = 63.0;
                amount.value = 63.0;
                merchantRef.value = "Store Induction";
                break;
            case "fh":
                amountValue = 45.0;
                amount.value = 45.0;
                merchantRef.value = "Food Handling";
                break;
            case "si_fh":
                amountValue = 100.0;
                amount.value = 100.0;
                merchantRef.value = "Store Induction + Food Handling";
                break;
            default:
                amountValue = 0;
                amount.value = 0;
                merchantRef.value = "[NO ORDER]";
                break;
        }
        
        displayAmount.innerHTML = '$' + displayCurrency(amountValue);
        updateOrder(quantity);
    };
    
    updateOrder = function(input){
        qty = input.value;
        if (!isNaN(qty) && qty.indexOf('.') < 0 && qty.length > 0 && qty > 0) {
            qtyValue = qty;
        }
        else 
            if (qty.length > 0) {
                qtyValue = (qty > 0 || isNaN(qty)) ? qtyValue : 1;
                quantity.value = qtyValue;
            }
            else {
                qtyValue = 0;
            }
        
        subValue = qtyValue * amountValue;
        taxValue = roundUp((subValue * taxRate / 100), 2);
        totalValue = roundUp(subValue + taxValue, 2);
        displaySub.innerHTML = '$' + displayCurrency(subValue);
        displayTax.innerHTML = '$' + displayCurrency(taxValue);
        displayTotal.innerHTML = '$' + displayCurrency(totalValue);
        subTotal.value = displayCurrency(subValue);
        tax.value = displayCurrency(taxValue);
        total.value = displayCurrency(totalValue);
        amount.value = displayCurrency(amountValue);
    };
    
    goDeposit = function(form){
        var frm = form;
        if (validate(frm)) {
            frm.action = '/public/include/scripts/processDeposit.asp';
            frm.submit();
        }
        else {
            return false;
        }
    };
    
    goDPS = function(form){
        var frm = form;
        if (validate(frm)) {
            frm.action = '/public/include/scripts/processDPS.asp';
            form.submit();
        }
        else {
            return false;
        }
    };
    
    // Form validation script v2.12
    // Validate function scans for input fields with matching [fieldname].validate hidden fields
    // Value argument of the hidden field is used for the error feedback message
    // Alt argument is used for [text/numeric/email/password]; [focus/select/none];
    //                          [predecessor]; [predecessor type]
    // Size argument used to set the minimum characters required
    //      *Set as 1 for default any size
    
    validate = function(form){
        for (var i = 0; i < form.length; i += 1) {
            var obj = form.elements[i];
            if (obj.type != 'hidden') {
                var objName = obj.name;
                var vObj = form[objName + '.validate'];
                // Does validation data exist
                if (vObj) {
                    var isError = false;
                    var message = vObj.value.replace(/\\n/g, '\n');
                    var minSize = vObj.size;
                    if (minSize < 2) {
                        minSize = 0;
                    }
                    var alt = vObj.alt;
                    var actions = [];
                    var count = 0;
                    var index1 = 0;
                    var index2 = alt.indexOf('\;');
                    while (index2 >= 0) {
                        actions[count] = alt.substring(index1, index2);
                        index1 = index2 + 1;
                        index2 = alt.indexOf('\;', index1);
                        count++;
                    }
                    actions[count] = alt.substring(index1, alt.length);
                    vType = (actions[0]) ? actions[0] : 'text';
                    sType = (actions[1]) ? actions[1] : 'focus';
                    pred = (actions[2]) ? actions[2] : '';
                    pType = (actions[3]) ? actions[3] : '';
                    var doCheck = true;
                    if (pred !== '') {
                        if (pType === 'display') { // Check object have display set to visible
                            var styleProperty;
                            if (document.getElementById) {
                                styleProperty = document.getElementById(pred).style;
                            }
                            else 
                                if (document.all) {
                                    styleProperty = document.all[pred].style;
                                }
                                else 
                                    if (document.layers) {
                                        styleProperty = document.layers[pred];
                                    }
                            if (styleProperty.display === 'none') {
                                doCheck = false;
                            }
                        }
                        if (pType === 'compare') { // Compare fields
                            if (obj.value !== form[pred].value) {
                                isError = true;
                                if (vType === 'password') {
                                    obj.value = '';
                                    form[pred].value = '';
                                    obj = form[pred];
                                }
                            }
                        }
                        if (pType.substr(0, 1) === '=') { // Check variable equal to value
                            var testValue = pType.substr(1);
                            if (this[pred] !== testValue) {
                                doCheck = false;
                            }
                        }
                    }
                    if (doCheck) {
                        // Trim leading/trailing spaces
                        var value = obj.value.replace(/(^\s+)|(\s+$)/g, '');
                        // Check if any value has been entered
                        if (value === '') {
                            isError = true;
                        }
                        // Check if value is numeric only > 0
                        if (vType === 'numeric' && isNaN(value)) {
                            isError = true;
                            message += '\nThis is a numeric field.';
                        }
                        else 
                            if (vType === 'numeric' && value < 1) {
                                isError = true;
                                message += '\nYou must supply a value greater than zero.';
                            }
                        if (value.length < minSize && minSize > 0) {
                            isError = true;
                            message += '\nYou must enter a minimum of ' + minSize + ' characters.';
                        }
                        // Check if value is a valid email address
                        var pattern = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
                        if (vType === 'email' && !pattern.test(value)) {
                            isError = true;
                        }
                        // Check if checkbox is checked
                        if (vType === 'checkbox' && !obj.checked) {
                            isError = true;
                        }
                        // Check if is valid radio selection
                        if (obj.type === 'radio') {
                            sType = 'none';
                            obj = form[obj.name];
                            isError = true;
                            for (var j = 0; j < obj.length; j += 1) {
                                if (obj[j].checked) {
                                    isError = false;
                                }
                            }
                        }
                        // Process errors
                        if (isError) {
                            alert(message);
                            if (sType === 'select') {
                                obj.select();
                            }
                            else 
                                if (sType !== 'none') {
                                    obj.focus();
                                }
                            return false;
                        }
                    }
                }
            }
        }
        return true;
    };
    
    return {
        setOrder: setOrder,
        updateAmount: updateAmount,
        updateOrder: updateOrder,
        goDeposit: goDeposit,
        goDPS: goDPS
    };
})();