クリックしようとすると画像が逃げます。
<HTML>
<HEAD>
<TITLE>Mouse Stoker</TITLE>
<SCRIPT TYPE="text/javascript">
<!--
//最初の位置
var x=200;
var y=12;

function ctrlMove(){
	var moveByX;
	var moveByY;

	var LEFT_MIN = document.body.scrollLeft;
	var LEFT_MAX = document.body.clientWidth + document.body.scrollLeft;
	var TOP_MIN  = document.body.scrollTop;
	var TOP_MAX  = document.body.clientHeight + document.body.scrollTop;

	moveByX = calcProc(x,LEFT_MIN,LEFT_MAX);
	x+=moveByX;

	moveByY = calcProc(y,TOP_MIN,TOP_MAX);
	y+=moveByY;

	moveByLayer("mouse",moveByX,moveByY);
}

function calcProc(baseNum,intMin,intMax){
	var retRnd;
	var result;

	retRnd =  Math.floor(Math.random() * 3 + 1);
	result = retRnd * 80;

	retRnd =  Math.random();
	if(retRnd > 0.5){
		result*=-1;
	}

	if(baseNum+result < intMin){
		result = result * -1;
	}

	if(baseNum+result > intMax){
		result = result * -1;
	}

	return result ;
}

function moveByLayer(idName,x,y){
	if(document.getElementById){
		var obj = document.getElementById(idName).style;
		obj.left = ( parseInt(obj.left) + x ) + 'px';
		obj.top  = ( parseInt(obj.top)  + y ) + 'px';
	}else if(document.all){
		document.all(idName).style.pixelLeft += x;
		document.all(idName).style.pixelTop  += y;
	}else if(document.layers){
		document.layers[idName].moveBy(x,y);
	}
}

//-->
</SCRIPT>
</HEAD>
<BODY>
<DIV ID="mouse" onMouseOver="ctrlMove()" STYLE="position:absolute;; width: 24; height: 32; left: 464px; top: 18px">
  <A HREF="javascript:alert('Ｇｅｔ’ｓ')"><IMG SRC="image/click1.gif" WIDTH="24" HEIGHT="32" BORDER="0"></A>
  </DIV>
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