why does this action script not work in player 8?

I have this javascript and actionscript and if i publish to player 7 they both work but not when i publish to player 8? is there something in the script that i need to change or is it not possible with player 8?

thanks... Peter


This is the script that i paste in the head of the html:

<script type="text/javascript"> 
<!--  
function shake(n) { 
if (parent.moveBy) { 
for (i = 10; i > 0; i--) { 
for (j = n; j > 0; j--) { 
parent.moveBy(0,i); 
parent.moveBy(i,0); 
parent.moveBy(0,-i); 
parent.moveBy(-i,0); 
        } 
     } 
  } 
} 
//  --> 
</script>




this is the FLASH ACTION SCRIPT that i paste on a frame or a button:
 getURL ("javascript:shake(5)");