몇가지 섞어봤습니다.

"M$", "불여우.." 모두 잘 되구요. Mac에서는 "Mac용 M$ El(5.2)"에서는 죽어도 안되는군요. "Mac 사파리"는 잘됩니다.

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<html>
<head>
<title> Top으로 </title>
<meta name="Generator" content="EditPlus">
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<meta name="Keywords" content="">
<meta name="Description" content="">
<script language="JavaScript">
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function back_top() {
x = document.body.scrollLeft;
y = document.body.scrollTop;
step = 2;

while ((x != 0) || (y != 0)) {
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step += (step * step / 100);
x -= step;
y -= step;
if (x < 0) x = 0;
if (y < 0) y = 0;
}
scroll (0, 0);
}

//top 버튼 용 레이어 생성
var verticalpos="frombottom";
document.write('<div style="z-index:0; width:100%; height:0px; position:absolute; display:block;">');
document.write(' <table width="900" height="0" border="0" align="center">'); // FIXED시킬 내용의 가로폭
document.write(' <tr>');
document.write(' <td>');
document.write(' <div id="divStayTopLeft" style="z-index:0; width:55px; height:13px; position:relative; display:none;">');
document.write(' <layer id="divStayTopLeft">');
document.write(' <img src="btn_top_001.gif" width="42" height="18" border="0" onClick="javascript:back_top();" onFocus="this.blur()" style="cursor:pointer;">');
document.write(' </layer>');
document.write(' </div>');
document.write(' </td>');
document.write(' </tr>');
document.write(' </table>');
document.write('</div>');

function TopDiv(path) {

var objTop = document.getElementById("divStayTopLeft");
objTop.style.display = "block";

var startX = 860; //X축 위치
startY = 100; //브라우저 하단에서의 위치

var ns = (navigator.appName.indexOf("Netscape") != -1);
var d = document;

function ml(id) {

var el=d.getElementById?d.getElementById(id):d.all?d.all[id]:d.layers[id];

if(d.layers)el.style=el;

el.sP=function(x,y){this.style.left=x;this.style.top=y;};
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var pY = ns ? pageYOffset : document.body.scrollTop;
ftlObj.y += (pY + startY - ftlObj.y)/8;
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ftlObj.y += (pY - startY - ftlObj.y)/8;
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ftlObj.sP(ftlObj.x, ftlObj.y);
setTimeout("stayTopLeft()", 10);

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ftlObj = ml("divStayTopLeft");
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</head>

<body onload="TopDiv();">
<table width="900" height="0" border="1" align="center">
<tr>
<td>
내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>내용<br>
</td>
</tr>
</table>
</body>
</html><div class='small'>[이 게시물은 관리자님에 의해 2011-10-31 17:16:08 PHP & HTML에서 이동 됨]</div>