After digging little inside in the prototype object. i have found can achieve inheritance. Really its nice to see the code in javascript. i will write some sample code. try to use your projects also.. In future am trying to implement javascript with the custom objects and methods. hope in future will see nice coding with javascript also.
Example
function Base()
{
this.a = "Bala";
this.b = "Bala1";
}
function Derive()
{
this.a = "Bala2";
}
function ShowAll()
{
Derive.prototype = new Base();
var show = new Derive();
alert(show.a);
alert(show.b);
}
<body onload="javascript:ShowAll()">
Output
Bala2
Bala1