function MainData(){    
    
    var _this = this;
    this.isEmpty = true;
        
    //video container model
    this.videoContainerModel;
    this.setVideoContainerModel = function(vcm){
        this.videoContainerModel = vcm;
    }
    this.getVideoContainerModel = function(vcm){
        return this.videoContainerModel;
    }
    
    
    //assets model
    this.assets;
    this.setAssets=function(val){
       this.assets = val;
    }
    this.getAssets=function(){
       return this.assets;
    }   

    

}