急,高手请帮忙,IE和firefox兼容问题,
这里是代码,兼容效果在http://www.giftour.com/test/1.html可以看到  
<!DOCTYPE   html   PUBLIC   "-//W3C//DTD   XHTML   1.0   Transitional//EN"   "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
<html   xmlns="http://www.w3.org/1999/xhtml">  
<head>  
<meta   http-equiv="Content-Type"   content="text/html;   charset=utf-8"   />  
<title> 无标题文档 </title>  
</head>  
<style   type="text/css">    
<!--    
*{padding:0;margin:0}    
#smallbox{border:1px   #ffffff   solid;float:left;width:0;height:0;overflow:hidden}    
#bigbox{border:1px   #ccc   solid;width:0px;height:0px;background:url(images/2.jpg)   no-repeat;}    
#view{border:1px   #ccc   solid;width:0px;height:0px;position:absolute}    
-->    
</style>    
<script   language="JavaScript">    
<!--    
var   srcX   =   2000;    
var   srcY   =   2000;    
var   bigX   =   290;    
var   bigY   =   290;    
var   smallX   =   290;  
var   smallY   =   290;    
var   viewX   =   bigX   /   srcX   *   smallX;    
var   viewY   =   bigY   /   srcY   *   smallY;    
var   bl   =   srcX   /   smallX;  
var   border   =   1;  
window.onload=function   (){    
         bigbox.style.borderWidth=border;    
         bigbox.style.width=bigX+border*2;    
         bigbox.style.height=bigY+border*2;    
         smallpic.width=smallX;    
         smallpic.height=smallY;    
         view.style.width=viewX;    
         view.style.height=viewY;    
         smallbox.style.borderWidth=border;    
         if   (window.event){    
                 smallbox.style.width=smallpic.offsetWidth+border*2;    
                 smallbox.style.height=smallpic.offsetHeight+border*2;    
         }else{    
                 smallbox.style.width=smallpic.offsetWidth;    
                 smallbox.style.height=smallpic.offsetHeight;    
         }    
         move(event);    
}    
function   move(e){    
var   e   =   window.event?window.event:e;    
var   iebug   =   0;    
if   (window.event){    
var   vX   =   e.offsetX   -   viewX/2;    
var   vY   =   e.offsetY   -   viewY/2;    
}else{    
var   vX   =   e.pageX   -   viewX/2   -   smallbox.offsetLeft   -   border;    
var   vY   =   e.pageY   -   viewY/2   -   smallbox.offsetTop   -   border;    
iebug   =   2;    
}    
if   (vX   <   0)   vX   =   0;    
if   (vY   <   0)   vY   =   0;    
if   (vX   >   smallX   -   viewX   -   iebug)   vX   =   smallX   -   viewX   -   iebug;    
if   (vY   >   smallY   -   viewY   -   iebug)   vY   =   smallY   -   viewY   -   iebug;    
view.style.left   =   vX   +   smallbox.offsetLeft   +   border;    
view.style.top   =   vY   +   smallbox.offsetTop   +   border;    
bigbox.style.backgroundPosition=   -   vX   *   bl   +   "   "   +   -vY   *   bl;    
}    
function   otherImages(images290,images2000)  
{  
var   obj290   =   document.getElementById('smallpic');  
obj290.src=images290;  
bigbox.style.background="url("+images2000+")";  
}  
displayDIV('');  
function   displayDIV(viewStyle)  
{  
bigb