Loading images into seperate mc

1

hi i have this
inside holder_mc i have 4 mc called b0 through to b3

how do i have each image load into each mc

 
var thumbArray = new Array ("image1.jpg","image2.jpg","image3.jpg","image4.jpg");
 
holder_mc.onEnterFrame= function() {
 for (var i=0; i<thumbArray.length; i++) {
  holder_mc("b"+i,_x= i*20);
  holder_mc.loadMovie(thumbArray*);
 }
}

any assist would be great thanks