네가 플레쉬를 못하는관계로 자바로 소스베껴서 대충 해봤다.
끝에 img 만 바꺼주면 되겠지..

<style>
.shakeimage{
position:relative
}
</style>
<script language="JavaScript1.2">

//configure shake degree (where larger # equals greater shake)
var rector=3

///////DONE EDITTING///////////
var stopit=0
var a=1

function init(which){
stopit=0
shake=which
shake.style.left=0
shake.style.top=0
}

function rattleimage(){
if ((!document.all&&!document.getElementById)||stopit==1)
return
if (a==1){
shake.style.top=parseInt(shake.style.top)+rector
}
else if (a==2){
shake.style.left=parseInt(shake.style.left)+rector
}
else if (a==3){
shake.style.top=parseInt(shake.style.top)-rector
}
else{
shake.style.left=parseInt(shake.style.left)-rector
}
if (a<4)
a++
else
a=1
setTimeout("rattleimage()",50)
}

function stoprattle(which){
stopit=1
which.style.left=0
which.style.top=0
}

</script>

<a href=http://nadark79.webzero.co.kr/songs/allm.htm targer=_self>

<img src="http://nadark79.webzero.co.kr/songs/allm.jpg" class="shakeimage" onMouseover="init(this);rattleimage()" onMouseout="stoprattle(this)" border=0></a>