南京谷里碧桂园二手房:我的对联广告如何浮动起来？？

代码：
var imgheight
var imgleft
document.ns = navigator.appName == 'Netscape'
imgheight=100
window.screen.width>770 ? imgleft=20:imgleft=120
function myleftload()
{
if (navigator.appName == 'Netscape')
{document.myleft.pageY=pageYOffset+window.innerHeight-imgheight;
document.myleft.pageX=imgleft;
myleftmove();
}
else
{
myleft.style.top=document.body.scrollTop;
//myleft.style.left=imgleft;
myleftmove();
}
}
function myleftmove()
{
if(document.ns)
{
document.myleft.top=pageYOffset+window.innerHeight-imgheight
//document.myleft.left=imgleft;
setTimeout('myleftmove();',80)
}
else
{
myleft.style.top=document.body.scrollTop;
myleft.style.left=imgleft;
setTimeout('myleftmove();',80)
}
}
function myrightload()
{
if (navigator.appName == 'Netscape')
{
document.myright.pageY=pageYOffset+window.innerHeight-imgheight;
document.myright.pageX=10;
myrightmove();
}
else
{
myright.style.top=document.body.scrollTop;
//myright.style.right=20;
myrightmove();
}
}
function myrightmove()
{
if(document.ns)
{
document.myright.top=pageYOffset+window.innerHeight-imgheight
document.myright.right=8;
setTimeout('myrightmove();',5)
}
else
{
myright.style.top=document.body.scrollTop;
//myright.style.right=20;
setTimeout('myrightmove();',5)
}
}
<!--? end-->

myleftload();
myrightload();

这是静止的，如何让他浮动呢？？？