/*
Conservation International CO2 Calculator
Copyright 2006 Conservation International
Portions Copyright 2006, 2005, 2004 Sustainable By Design
File: javascript/misc.js
*/
/* ******************************** */
/* FUNCTION: SetInitialCalculator */
/* ******************************** */
function SetInitialCalculator () {
currentCalculator = 'intro';
queryString = location.search.substring(1);
queryPairs = queryString.split("&");
for (i = 0; i < queryPairs.length; i ++) {
queryPair = queryPairs[i];
equalPosition = queryPair.indexOf('=');
if (equalPosition == -1) continue;
arg = queryPair.substring(0, equalPosition);
value = queryPair.substring(equalPosition + 1);
if (arg == 'calculator') {
for (j = 0; j < tabs.length; j ++) {
if (tabs[j] == value) {
currentCalculator = value;
Tab (currentCalculator);
}
}
}
}
}
/* ******************************** */
/* FUNCTION: PreloadImages */
/* ******************************** */
function PreloadImages () {
}
/* ******************************** */
/* FUNCTION: GetRadioButtonValue */
/* ******************************** */
function GetRadioButtonValue (radioButton) {
radioLength = radioButton.length;
if (radioLength == undefined) {
if (radioButton.checked) {
return radioButton.value;
}
else {
return "";
}
}
for (i = 0; i < radioLength; i ++) {
if (radioButton[i].checked) {
return radioButton[i].value;
}
}
return "";
}
/* ************************ */
/* FUNCTION: FormatFloat */
/* ************************ */
function FormatFloat (number, format) {
/* digits to display after the decimal point */
if (format == 'integer') {
desiredPrecision = 0;
}
else {
if (format == null) {
desiredPrecision = 1;
}
else {
desiredPrecision = format;
}
}
/* for floats...*/
if (desiredPrecision > 0) {
/* convert number to string */
number = number.toString();
/* if the number is an integer, add decimal point */
if (number.indexOf('.') == -1) {
number = number + '.';
}
/* get the number of digits after the decimal point */
currentPrecision = number.length - number.indexOf('.') - 1;
/* calculate precision variance */
precisionVariance = (desiredPrecision - currentPrecision);
/* if number is too precise, whack it off */
if (precisionVariance < 0) {
number = number.substr(0, (number.length + precisionVariance));
}
/* if number isn't precise enough, add trailing zeroes */
for (i = 0; i < precisionVariance; i ++) {
number = number + '0';
}
/* if zero */
if (number == 0) {
number = "0.0";
}
}
/* for integers */
else {
number = parseInt (number);
}
return (number);
}
/* ************************ */
/* FUNCTION: UpdateSubtotal */
/* ************************ */
function UpdateSubtotal (divID, value) {
subtotalText = FormatFloat (value) + ' tons of CO2 / year';
document.getElementById(divID).innerHTML = subtotalText;
}
/* ************************ */
/* FUNCTION: UpdateTotal */
/* ************************ */
function UpdateTotal (divID, value, absolute) {
if (absolute) {
units = 'tons of CO2';
}
else {
units = 'tons of CO2 / year';
}
totalText = FormatFloat (value) + ' ' + units + '';
document.getElementById(divID).innerHTML = totalText;
}
/* ***************************** */
/* FUNCTION: UpdateTotalNotes */
/* ***************************** */
function UpdateTotalNotes (divID, value) {
donation_url = '';
// gift offsets
if (divID=="gift_total_notes"){
donation_url = '';
};
totalText = 'Offset your CO2 emissions with a $' + FormatFloat(value, 'integer') + ' donation
';
totalText = totalText + donation_url;
totalText = totalText + '
';
//document.getElementById(divID).innerHTML = totalText;
}
/* ***************************** */
/* FUNCTION: ResetSelectMenus */
/* ***************************** */
function ResetSelectMenus () {
f = document.theForm;
/* HOME ENERGY */
f.personal_home_residence.selectedIndex = 0;
f.personal_home_simple_occupants.selectedIndex = 0;
f.personal_home_detailed_state.selectedIndex = 0;
f.personal_home_detailed_occupants.selectedIndex = 0;
f.personal_home_electricity.selectedIndex = 0;
f.personal_home_gas.selectedIndex = 0;
f.personal_home_oil.selectedIndex = 0;
f.personal_home_propane.selectedIndex = 0;
f.personal_home_wood.selectedIndex = 0;
/* CAR TRAVEL */
f.personal_car_class.selectedIndex = 0;
f.personal_car_miles_simple.selectedIndex = 0;
f.personal_car_mpg.selectedIndex = 0;
f.personal_car_miles_detailed.selectedIndex = 0;
/* AIR TRAVEL */
f.personal_air_short.selectedIndex = 0;
f.personal_air_long.selectedIndex = 0;
/* DIET */
f.personal_diet.selectedIndex = 0;
/* RECALCULATE */
Calculate ();
}
/* ***************************** */
/* FUNCTION: Popup */
/* ***************************** */
function Popup (fileName) {
args = "width=600,height=400,resizable=yes,scrollbars=yes";
if (typeof (popup_windows[name]) != "object") {
popup_windows[name] = window.open (fileName, fileName, args);
}
else {
if (! popup_windows[name].closed) {
popup_windows[name].location.href = fileName;
}
else {
popup_windows[name] = window.open (fileName, fileName, args);
}
}
popup_windows[name].focus();
}