<html>
<body>
<script type="text/javascript">
function Car(sColor,iDoors,iMpg) {
this.color = sColor;
this.doors = iDoors;
this.mpg = iMpg;
this.showColor = function() {
document.write(this.color);
};
}
var oCar1 = new Car("red",4,23);
var oCar2 = new Car("blue",3,25);
oCar1.showColor();
document.write("<br />")
oCar2.showColor();
</script>
</body>
</html>