var country_blocks = new Array();
var currency_blocks = new Array();
// As rate data feed is set relative to USD, we need to introduce the base currency - TWD
var base_currency = "TWD";
function get_country_type_id(index) {
return "converter-country-type"+index.toString();
}
function get_country_amount_id(index) {
return "converter-country-amount"+index.toString()
}
function get_currency_type_id(index) {
return "converter-type"+index.toString();
}
function get_currency_amount_id(index) {
return "converter-amount"+index.toString()
}
function make_country_block(name, currency) {
var id = country_blocks.length;
country_blocks[id] = currency;
var name1 = get_country_amount_id(id);
var name2 = get_country_type_id(id);
document.write("
");
}
function make_country_block2(name, currency) {
var id = country_blocks.length;
country_blocks[id] = currency;
var name1 = get_country_amount_id(id);
var name2 = get_country_type_id(id);
document.write("
");
}
function validate_amount(amount) {
// Empty amount value is not valid,
// but should not be colored
//
if (amount.value == "") {
amount.className = 'goodvalue';
return false;
};
var matches = amount.value.match(/^\d([\d, `']*)(\.\d+)?$/);
if (matches == null) {
amount.className = 'badvalue';
return false;
};
amount.className = 'goodvalue';
return true;
}
function validate_type(type) {
if (!rate[type.value]) {
// type.className = 'badvalue';
return false;
};
// type.className = 'goodvalue';
return true;
}
// Note that all currency values are acutoconverted into taiwan
// currency!
//
function amount_to_num(currency, amount) {
var cleared = amount.replace(/[ `',]/g,'');
if (cleared == '') {
cleared = "0";
};
return convert_currency_from(currency,parseFloat(cleared));
}
function num_to_amount(currency, num) {
var currency_num = convert_currency_to(currency, num);
var fraction = Math.floor(currency_num*100+0.50001) % 100;
// Add leading zero to fractional part, if required)
if (fraction < 10) { fraction = "0" + fraction.toString(); };
// Split integer value into groups of three digits separated by commas
var integer = Math.floor(currency_num).toString();
var integer_str = ""
for (var i = integer.length-1; i >= 0; i-=3 ) {
integer_str = "," + integer.substr(i-3 < 0 ? 0 : i-2,
i-3 >= 0 ? 3 : i+1) + integer_str;
};
integer_str = integer_str.substr(1);
// Check if there's no data in integer string
if (integer_str == "") { integer_str = "0"; };
return integer_str + "." + fraction;
}
function convert_currency_from(currency, value) {
if (currency == "") { return value; };
return Math.floor(value / rate[currency] * rate[base_currency] * 100 + 0.50001) / 100;
}
function convert_currency_to(currency, value) {
if (currency == "") { return value; };
return Math.floor(value * rate[currency] / rate[base_currency] * 100 + 0.50001) / 100;
}
function update(taiwan_amount, currency, amount) {
// If currency is not set, just clear the amount value
if (currency.value == "") {
amount.value = "";
return;
};
// if currency is not selected, do not change its color
if (currency.value != "---" || amount.value != "") {
if (validate_type(currency)) {
amount.value = num_to_amount(currency.value, taiwan_amount);
amount.className = 'goodvalue';
};
} else {
currency.className = "goodvalue";
};
}
function update_country(index) {
var amount = document.getElementById(get_country_amount_id(index));
var type = document.getElementById(get_country_type_id(index));
// Check if entered value can be converted to a number
//
if (!validate_amount(amount)) { return; };
if (!validate_type(type)) { return; };
// Convert entered amount to a numeric value (possibly removing the commas)
//
var base_amount = amount_to_num(type.value,amount.value);
// Update all other values
//
document.getElementById('converter-taiwan-amount').value = num_to_amount("",base_amount);
document.getElementById('converter-taiwan-amount').className = 'goodvalue';
// Update country values
//
for (var i=0; i