<script language="javascript">
var intIndex=0;arrList = new Array();
arrList[intIndex++] = "1sdfsdf.com";
arrList[intIndex++] = "a11sdafs.net";
arrList[intIndex++] = "b22dsafsdf";
arrList[intIndex++] = "c333asdfsadf";
arrList[intIndex++] = "4444dsafasdf";
arrList[intIndex++] = "dddsfddsafdsaf";
arrList[intIndex++] = "121213dsafsdaf";
arrList[intIndex++] = "43213asdfadsf";
arrList[intIndex++] = "dsa3121dasf3";
arrList[intIndex++] = "a213";
arrList[intIndex++] = "323313";
arrList[intIndex++] = "3213";
arrList[intIndex++] = "32213";
arrList[intIndex++] = "dsfsdddd";
arrList[intIndex++] = "ds11dfsfd";
arrList[intIndex++] = "ffdafd";
arrList[intIndex++] = "afdfd";
arrList[intIndex++] = "afd";
arrList[intIndex++] = "baffad";
arrList[intIndex++] = "2fda2fd";
arrList[intIndex++] = "dasd";

function smanPromptList(arrList,objInputId){
	this.style = "background:#E8F7EB;border: 1px solid #CCCCCC;font-size:14px;cursor: default;"
	if (arrList.constructor!=Array){alert('smanPromptList初始化失敗:第一個參數非數組!');return ;}
	window.onload =function() {
                                 arrList.sort(function(a,b){
                                          if(a.length>b.length)return 1;
                                         else if(a.length==b.length)return a.localeCompare(b);
                                         else return -1;
                                })
		var objouter=document.getElementById("__smanDisp") //顯示的DIV對象
		var objInput = document.getElementById(objInputId); //文本框對象
		var selectedIndex=-1;
		var intTmp; //循環用的:)
		if (objInput==null) {alert('smanPromptList初始化失敗:沒有找到"'+objInputId+'"文本框');return ;}
			//文本框失去焦點
			objInput.onblur=function(){
				objouter.style.display='none';
			}
			//文本框按鍵抬起
			objInput.onkeyup=checkKeyCode;
			//文本框得到焦點
			objInput.onfocus=checkAndShow;
			function checkKeyCode(){
				var ie = (document.all)? true:false
				if (ie){
					var keyCode=event.keyCode
					if (keyCode==40||keyCode==38){ //下上
						var isUp=false
						if(keyCode==40) isUp=true ;
						chageSelection(isUp)
					}else if (keyCode==13){//回車
						outSelection(selectedIndex);
					}else{
						checkAndShow()
					}
				}else{
					checkAndShow()
				}
				divPosition()
			}

			function checkAndShow(){
						var strInput = objInput.value
						if (strInput!=""){
							divPosition();
							selectedIndex=-1;
							objouter.innerHTML ="";
							for (intTmp=0;intTmp<arrList.length;intTmp++){
								if (arrList[intTmp].substr(0, strInput.length).toUpperCase()==strInput.toUpperCase()){
									addOption(arrList[intTmp]);
								}
							}
							objouter.style.display='';
						}else{
							objouter.style.display='none';
					}
					function addOption(value){
						objouter.innerHTML +="<div onmouseover=\"this.className='sman_selectedStyle'\" onmouseout=\"this.className=''\" onmousedown=\"document.getElementById('"+objInputId+"').value='" + value + "'\">" + value + "</div>"	
					}
			}
			function chageSelection(isUp){
				if (objouter.style.display=='none'){
					objouter.style.display='';
				}else{
					if (isUp)
						selectedIndex++
					else
						selectedIndex--
				}
				var maxIndex = objouter.children.length-1;
				if (selectedIndex<0){selectedIndex=0}
				if (selectedIndex>maxIndex) {selectedIndex=maxIndex}
				for (intTmp=0;intTmp<=maxIndex;intTmp++){

					if (intTmp==selectedIndex){
						objouter.children[intTmp].className="sman_selectedStyle";
					}else{
						objouter.children[intTmp].className="";
					}
				}
			}
			function outSelection(Index){
				objInput.value = objouter.children[Index].innerText;
				objouter.style.display='none';
			}
			function divPosition(){
				objouter.style.top	=getAbsoluteHeight(objInput)+getAbsoluteTop(objInput);
				objouter.style.left	=getAbsoluteLeft(objInput); 
				objouter.style.width=getAbsoluteWidth(objInput)
			}
	}
	document.write("<div id='__smanDisp' style='position:absolute;display:none;" + this.style + "' onbulr> </div>");
	document.write("<style>.sman_selectedStyle{background-Color:#102681;color:#FFFFFF}</style>");
	function getAbsoluteHeight(ob){
		return ob.offsetHeight
	}
	function getAbsoluteWidth(ob){
		return ob.offsetWidth
	}
	function getAbsoluteLeft(ob){
		var mendingLeft = ob .offsetLeft;
		while( ob != null && ob.offsetParent != null && ob.offsetParent.tagName != "BODY" ){
			mendingLeft += ob .offsetParent.offsetLeft;
			mendingOb = ob.offsetParent;
		}
		return mendingLeft ;
	}
	function getAbsoluteTop(ob){
		var mendingTop = ob.offsetTop;
		while( ob != null && ob.offsetParent != null && ob.offsetParent.tagName != "BODY" ){
			mendingTop += ob .offsetParent.offsetTop;
			ob = ob .offsetParent;
		}
		return mendingTop ;
	}
}
smanPromptList(arrList,"inputer")
</script>

<input type="text" id="inputer">