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var xmlHttp;
function createXMLHttpRequest()
{
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{
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function doJSON() {
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    xmlHttp.setRequestHeader("content-type", "application/x-www-form-urlencode");
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}
function getCarObject()
{
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}
function Car(make,model,year,color)
{
    this.Make=make;
    this.Model=model;
    this.Year=year;
    this.Color=color;
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{
    if(xmlHttp.readyState == 4)
{
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        {
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