我想做一个像,163邮箱里的输入收件人时的逐步提示效果,请赐教,急,最好是代码!感谢!

给你转一个
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<style>
body,div {
font-family:verdana;
line-height:100%;
font-size:9pt;
}
input {
width:300px;
}
h1 {
text-align:center;
font-size:2.2em;
}
#divf {
margin:10px;
font-size:0.8em;
text-align:center;
}
#divc {
border:1px solid #333333;
}
.des {
width:500px;
background-color:lightyellow;
border:1px solid #333;
padding:20px;
margin-top:20px;
}
.mouseover {
color:#ffffff;
background-color:highlight;
cursor:default;
}
.mouseout {
color:#000000;
background-color:#ffffff;
cursor:default;
}
</style>
<SCRIPT LANGUAGE="JavaScript">
<!--// script by blueDestiny
// email : blueDestiny [at] 126 . com// Object: jsAuto
// browser: ie, mf.
// example:// step1 : 
// create autocomplete container, return object and bind event to the objce, and 
///create a new jsAuto instance:
// <div id="divautocomplete"></div>
// var autocomplete = new jsAuto("autocomplete","divautocomplete")
// handle event:
// autocomplete.handleEvent(value, returnObjectID)
// <input id="rautocomplete" onkeyup="autocomplete.handleEvent(this.value,"ratocomplete")>// step2 :
// add autocompete item:
// autocomplete.item(string)
// string must be a string var, you can split the string by ","
// autocomplete.item("blueDestiny,never-online,csdn,blueidea")// http://www.never-online.comfunction jsAuto(instaceName,objID)
{
this._msg = [];
this._o = document.getElementById( objID );
if (!this._o) return;
this._f = null;
this._i = instaceName;
this._r = null;
this._v = null;
this._o.style.visibility = "hidden";
this._o.style.lineHeight = "120%";
this._o.style.position = "absolute";
this._o.style.zIndex = "9999";
return this;
};// mouseEvent.
jsAuto.prototype.domouseover=function(obj)
{
obj.tagName=="DIV" ? obj.className="mouseover" : obj.parentElement.className="mouseover";
};
jsAuto.prototype.domouseout=function(obj)
{
obj.tagName=="DIV" ? obj.className="mouseout" : obj.parentElement.className="mouseout";
};
jsAuto.prototype.doclick=function(msg) { with (this)
{
if(_r)
{
_r.value = msg;
_o.style.visibility = "hidden";
}
else
{
alert("javascript autocomplete ERROR :\n\n can not get return object.");
return;
}
}};// object method;
jsAuto.prototype.item=function(msg)
{
if( msg.indexOf(",")>0 )
{
var arrMsg=msg.split(",");
for(var i=0; i<arrMsg.length; i++)
{
arrMsg[i] ? this._msg.push(arrMsg[i]) : "";
}
}
else
{
this._msg.push(msg);
}
this._msg.sort();
};
jsAuto.prototype.append=function(msg) { with (this)
{
_i ? "" : _i = eval(_i);
var div = document.createElement("DIV"); //bind event to object.
div.onmouseover = function(){_i.domouseover(this)};
div.onmouseout = function(){_i.domouseout(this)};
div.onclick = function(){_i.doclick(msg)};
var re  = new RegExp("(" + _v + ")","i");
div.className = "mouseout";
if (_v) div.innerHTML = msg.replace(re , "<strong>$1</strong>");
div.style.fontFamily = "verdana"; _o.appendChild(div);
}};
jsAuto.prototype.display=function() { with(this)
{
if(_f)
{
_o.style.left = _r.offsetLeft;
_o.style.width = _r.offsetWidth;
_o.style.top = _r.offsetTop + _r.offsetHeight;
_o.style.visibility = "visible";
}
else
{
_o.style.visibility="hidden";
}
}};
jsAuto.prototype.handleEvent=function(fValue,fID) { with (this)
{
var re;
_f = false;
_r = document.getElementById( fID );
_v = fValue;
_i = eval(_i);
re = new RegExp("^" + fValue + "", "i"); if( fValue=="" ) return;
_o.innerHTML=""; for(var i=0; i<_msg.length; i++)
{
if(re.test(_msg[i]))
{
_i.append(_msg[i]);
_f = true;
}
} _i ? _i.display() : alert("can not get instance");
}};
window.onerror=new Function("return true;");
//-->
</SCRIPT>
</HEAD><BODY>
<div id="divc">
<!--this is the autocomplete container.-->
</div>
<h1>Autocomplete Function</h1>
<div align="center">
<input onkeyup="jsAutoInstance.handleEvent(this.value,'auto')" id="auto">
</div>
<div id="divf">
Power By Miracle, never-online
</div><SCRIPT LANGUAGE="JavaScript">
<!--
var jsAutoInstance = new jsAuto("jsAutoInstance","divc");
jsAutoInstance.item("a-start,b-start,c-start,d-start,e-start,f-start,g-start,h-start,i-start,j-start,k-start,l-start,m-start,n-start,o-start,p-start,q-start,r-start,s-start,t-start,u-start,v-start,w-start,x-start,y-start,z-start,z-start");
jsAutoInstance.item("blueDestiny");
jsAutoInstance.item("BlueMiracle,Blue");
jsAutoInstance.item("angela,geniuslau");
jsAutoInstance.item("never-online");
//-->
</SCRIPT>
</BODY>
</HTML>