Mac OS X menu dock

Hello I found this one menu that simulates dock of OSX, somebody can help me to personalize the icons please?

[LIST=1]
[*]align = bottom;
[*]centerx = Stage.width/2;
[*]centery = Stage.height/2;
[*]menuholder = createEmptyMovieClip("menuholder", -1);
[*]menuholder._x = centerx;
[*]menucount = 5;
[*]menuitems = [];
[*]miheight = 50;
[*]miborder = 1;
[*]starty = centery-((menucount-1)*(miheight+miborder))/2;
[*]for (var i = 0; i<menucount; i++) {
[*]   var menuitem = menuholder.attachMovie("menuitem", "menu"+i, i);
[*]   menuitem._y = starty+i*(miheight+miborder);
[*]   menuitem.id = i;
[*]   menuitem.onRollOver = function() {
[*]      _root.selected = this;
[*]   };
[*]   menuitems.push(menuitem);
[*]}
[*]onEnterFrame = function () {
[*]   var width = 0;
[*]   for (var i = 0; i<menucount; i++) {
[*]      var xxm = menuitems*._xmouse;
[*]      var yym = menuitems*._ymouse;
[*]      var   xm = Math.sqrt(xxm*xxm+yym*yym);
[*]      if (xm<50) {
[*]         menuitems*._xscale = menuitems*._yscale += ((200-xm)-menuitems*._yscale)/3;
[*]         }
[*]      else {
[*]         menuitems*._xscale = menuitems*._yscale += (100-menuitems*._yscale)/3;
[*]         }
[*]      width += menuitems*._width;
[*]   }
[*]   width += (menucount-1)*miborder;
[*]   var ypos = Math.round(centery-height/2);
[*]   for (var i = 0; i<menucount; i++) {
[*]      ypos += menuitems[i-1]._height/2+miborder+menuitems*._height/2;menuitems*._y = ypos;
[*]   }
[*]};

[/LIST]