function scrollx(p){ 
var d = document,dd = d.documentElement,db = d.body,w = window,o = d.getElementById(p.id),ie6 = /msie 6/i.test(navigator.userAgent),style,timer; 
if(o){ 
o.style.cssText +=";position:"+(p.f&&!ie6?'fixed':'absolute')+";"+(p.l==undefined?'right:0;':'left:'+p.l+'px;')+(p.t!=undefined?'top:'+p.t+'px':'bottom:0'); 
if(p.f&&ie6){ 
o.style.cssText +=';left:expression(documentElement.scrollLeft + '+(p.l==undefined?dd.clientWidth-o.offsetWidth:p.l)+' + "px");top:expression(documentElement.scrollTop +'+(p.t==undefined?dd.clientHeight-o.offsetHeight:p.t)+'+ "px" );'; 
dd.style.cssText +=';background-image: url(about:blank);background-attachment:fixed;'; 
}else{ 
if(!p.f){ 
w.onresize = w.onscroll = function(){ 
clearInterval(timer); 
timer = setInterval(function(){ 
//双选择为了修复chrome 下xhtml解析时dd.scrollTop为 0 
var st = (dd.scrollTop||db.scrollTop),c; 
c = st - o.offsetTop + (p.t!=undefined?p.t:(w.innerHeight||dd.clientHeight)-o.offsetHeight); 
if(c!=0){ 
o.style.top = o.offsetTop + Math.ceil(Math.abs(c)/10)*(c<0?-1:1) + 'px'; 
}else{ 
clearInterval(timer); 
} 
},10) 
} 
} 
} 
} 
} 
/*
scrollx({ 
id:'aa' 
}) 
scrollx({ 
id:'bb', 
l:0, 
t:200, 
f:1 
}) 
id 你要滚动的内容的id 
l 横坐标的位置 不写为紧贴右边 
t 你要放在页面的那个位置默认是贴着底边 0是贴着顶边 
f 1表示固定 不写或者0表示滚动 
*/