[рони]

riva,
вариант...

function myswf()
{

}
myswf.calc = function( a ,b )
    {
        return a + b ;
    }
        console.log( myswf.calc( 5 ,5 ) )

function myswf()
{
     this.calc = function( a ,b )
    {
        return a + b ;
    }
}

      var a =  new myswf

        console.log( a.calc( 5 ,5 ) )