Perspective resize movieclip

hi dudes,
i made flash application interior simulation
i used tile duplicated background for the floor movieclip
but now the floor looks flat i need to resize it perspectively using actionscript
anyone knows how to do it?

here is the action:

getbigPhoto=function(sname){

if(deep!=undefined){
for (i=0; i<deep; i++){
_root.photo[“bg”+deep].removeMovieClip();
}
}

childWidth = 38;
childheight = 38;

MaxRow = math.round(450/childWidth);//Math.round(_root.photo._width/childWidth);
MaxCol = math.round(191/childheight);//Math.round(_root.photo._height/childheight);
deep=0;
for (x=0; x<MaxRow; x++) {
for (y=0; y<MaxCol; y++) {
bg = _root.photo.createEmptyMovieClip(“bg”+deep,deep);
bg.loadMovie(pathThumb+sname);
bg._x = childWidthx;
bg._y = childheight
y;
deep++;
}
}
}
getbigPhoto(“floor1.jpg”)