ตาม code ข้างล่างนี้ ถ้าเราไม่อยากให้มันเลื่อนไปจนถึง footer เราต้องทำยังไงครับ

Css
body{
font-size:12px; font-family:Arial;
}
#FloatingLayer507{position:absolute;left:800;top:10; z-index:1000; font-size:12px; font-weight:bold; margin-left:10px;}
#FloatingLayer507 img{ display:block; border:0px;}
#FloatingLayer507 a{ color:#000; text-align:right; text-decoration:none;}
#FloatingLayer507 a:hover{ color: #FF0000;}
Html
<script type="text/javascript">var FloatingAd_Timeout507=6000000;var startX507 =818;var startY507 = 10;var FloatingAd_Layer507 = "FloatingLayer507";</script>
<div id="FloatingLayer507">
<a href="#" onClick="closebar_th507(); return false">x [close]</a>
<a href="#"><img src="ads2.gif"></a>
</div>
<script type="text/javascript" src="float.js"></script>
Javascript
var FloatingAd_close507=0;
var d = document;
var ns=(navigator.appName.indexOf("Netscape") != -1 && navigator.userAgent.indexOf("Gecko") == -1);
var iebody=(document.compatMode && document.compatMode != "BackCompat")? document.documentElement : document.body
startX507=MAX_getClientSize(160);
function MAX_getClientSize(w) {
if (window.innerHeight >= 0) {
return window.innerWidth-w; }
else if (document.documentElement && document.documentElement.clientWidth > 0) {
return document.documentElement.clientWidth-w; }
else if (document.body.clientHeight > 0) {
return document.body.clientWidth-w;}
else { return 900; }
}
function FloatingAd_ModiObj507(id){
// find obj
var obj = d.getElementById ? d.getElementById(id) : (d.all ? d.all[id] : d.layers[id]);
//NS
if(d.layers) {
obj.style=obj;
}
//Define
obj.float_to =function(x,y) {
if (document.all||document.getElementById){
this.style.left = x "px";
this.style.top = y "px";
}
};
obj.x=startX507;
obj.y=startY507;
return obj;
}
function closebar_th507(){
document.getElementById(FloatingAd_Layer507).style.visibility="hidden"
}
function floatingAdClose507(){
clearTimeout(FloatingAd_Timer507);
if(d.getElementById){
d.getElementById(FloatingAd_Layer507).style.display = "none";
d.getElementById(FloatingAd_Layer507).innerHTML="";
}
else if(d.all){
d.all[FloatingAd_Layer507].style.display = "none";
d.all[FloatingAd_Layer507].innerHTML="";
}
else{
d.layers[FloatingAd_Layer507].visibility="hide";
}
FloatingAd_close507=1;
}
function FloatingAd_Stay507(){
if(!FloatingAd_close507){
var pageY507=document.all? iebody.scrollTop : pageYOffset
FloatingObj507.y = (pageY507 startY507 - FloatingObj507.y)/8;
FloatingObj507.float_to(FloatingObj507.x,FloatingObj507.y);
setTimeout("FloatingAd_Stay507()",10);
}
}
function FloatingAd_Start507(){
FloatingObj507=FloatingAd_ModiObj507(FloatingAd_Layer507);
if(FloatingAd_Timeout507 !=0 ) FloatingAd_Timer507=setTimeout("floatingAdClose507()",FloatingAd_Timeout507);
FloatingAd_Stay507();
}
FloatingAd_Start507();