Movie scaling

so i hvae this code i’m trying to learn on:

 
fscommand("allowscale", "false");
 
links = new Array();
links[1] = ["[1","Cauta](http://intranet/searchcenter/Pages/default.aspx%22,%22Cauta)"];
links[2] = ["[2","Network](http://intranet/aplicatii_directii/network_academy/default.aspx%22,%22Network)"];
links[3] = ["[3","Implica](http://intranet/sugestii_angajati/default.aspx%22,%22Implica-te)"];
links[4] = ["[4","](http://intranet/hr/fl_sal/default.aspx%22,%22Fluturasi)Salariu"];
 
posX = Stage.width / 2;
posY = Stage.height / 2;
 
atasez_clip = links.length-1;
for (var i = 1; i < atasez_clip + 1; i++) {
 attachMovie("clip", "clip" + i, i);
}
////////////////
////////////////
_global.signal=true;
 
this.onEnterFrame = function() {
 if (signal) {
 mausPos += ((_root._xmouse - posX) / 500);
 for (var i = 1; i < atasez_clip + 1; i++) {
  miscarea = ((mausPos + (360 / atasez_clip * i)) * Math.PI) / 180;
  this["clip" + i]._x = posX + (Math.sin(miscarea) * 170);
  this["clip" + i]._y = posY + (Math.cos(miscarea) * 50);
  this["clip" + i]._xscale = 100 + (Math.cos(miscarea) * 50)
  this["clip" + i]._yscale = 100 + (Math.cos(miscarea) * 50);  
  this["clip" + i].swapDepths(1000 + (Math.cos(miscarea) * 100));
  this["clip" + i].txtName = links*[1];
  this["clip" + i].url = links*[0];
  this["clip" + i].onRelease = function() {
   getURL(this.url, "_target");
   signal = false;
  }; 
  this["clip" + i].onRollOver = function() {
   this["clip" + i]._xscale =( 50 * this["clip" + i]) /100;
   signal = false;
 
  };
  this["clip" + i].onRollOut = function() {
   signal = true;
  };
 }
 }
};
 
logo.swapDepths(999 + 1);

what i want is thet when mouse over the clip, this shoul grow in size by 20% let’s say… or it doesn’t even matter, i want it to grow a little.
i was trying this[“clip” + i]._xscale =( 50 * this[“clip” + i]) /100; but no works for me…
thanks