Passing _prototype_ throught a funtion

Hello,

I have a prototype and in a function i would like to pass that to a mc like :

MovieClip.prototype.isProtoClass = function(class:Function){
this.obj = new Object();
this.obj.class(some param)

}
MovieClip.prototype.isProtoClass2 = function(){
//something
}
obj1.isProtoClass(isProtoClass2)

Is there anyway to do that?