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<HTML>
<HEAD>
<TITLE>Instance method demo</TITLE>
</HEAD>
<BODY>
<H1>
<SCRIPT>
function Rectangle(height, width){
this.height = height;
this.width = width;
}
function calc_Area () {
return this.height * this.width;
}
function to_String() {
return this.height + " by " +this.width;
}
Rectangle.prototype.calcArea = calc_Area;
Rectangle.prototype.toString = to_String;
var theRectangle = new Rectangle (2, 42);
document.write(theRectangle);
</SCRIPT>
</H1>
</BODY>
</HTML>
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