jQuery.autocomplete=function(input,options){
var me=this;
var $input=$(input).attr("autocomplete","off");
if(options.inputClass)$input.addClass(options.inputClass);
var results=document.createElement("div");
var $results=$(results);
$results.hide().addClass(options.resultsClass).css("position","absolute");
if(options.width>0)$results.css("width",options.width);
$("body").append(results);
input.autocompleter=me;
var timeout=null;
var prev="";
var active=-1;
var cache={};
var keyb=false;
var hasFocus=false;
var lastKeyPressCode=null;
function flushCache(){
cache={};
cache.data={};
cache.length=0;
};
flushCache();
if(options.data!=null){
var sFirstChar="",stMatchSets={},row=[];
if(typeof options.url!="string")options.cacheLength=1;
for(var i=0;i<options.data.length;i++){
row=((typeof options.data[i]=="string")?[options.data[i]]:options.data[i]);
if(row[0].length>0){
sFirstChar=row[0].substring(0,1).toLowerCase();
if(!stMatchSets[sFirstChar])stMatchSets[sFirstChar]=[];
stMatchSets[sFirstChar].push(row);
}
}
for(var k in stMatchSets){
options.cacheLength++;
addToCache(k,stMatchSets[k]);
}
}
$input
.keydown(function(e){
lastKeyPressCode=e.keyCode;
switch(e.keyCode){
case 38:
e.preventDefault();
moveSelect(-1);
break;
case 40:
e.preventDefault();
moveSelect(1);
break;
case 9:
case 13:
if(selectCurrent()){
$input.get(0).blur();
e.preventDefault();
}
break;
default:
active=-1;
if(timeout)clearTimeout(timeout);
timeout=setTimeout(function(){onChange();},options.delay);
break;
}
})
.focus(function(){
hasFocus=true;
})
.blur(function(){
hasFocus=false;
hideResults();
});
hideResultsNow();
function onChange(){
if(lastKeyPressCode==46||(lastKeyPressCode>8&&lastKeyPressCode<32))return $results.hide();
var v=$input.val();
if(v==prev)return;
prev=v;
if(v.length>=options.minChars){
$input.addClass(options.loadingClass);
requestData(v);
}else{
$input.removeClass(options.loadingClass);
$results.hide();
}
};
function moveSelect(step){
var lis=$("li",results);
if(!lis)return;
active+=step;
if(active<0){
active=0;
}else if(active>=lis.size()){
active=lis.size()-1;
}
lis.removeClass("ac_over");
$(lis[active]).addClass("ac_over");
};
function selectCurrent(){
var li=$("li.ac_over",results)[0];
if(!li){
var $li=$("li",results);
if(options.selectOnly){
if($li.length==1)li=$li[0];
}else if(options.selectFirst){
li=$li[0];
}
}
if(li){
selectItem(li);
return true;
}else{
return false;
}
};
function selectItem(li){
if(!li){
li=document.createElement("li");
li.extra=[];
li.selectValue="";
}
var v=$.trim(li.selectValue?li.selectValue:li.innerHTML);
input.lastSelected=v;
prev=v;
$results.html("");
$input.val(v);
hideResultsNow();
if(options.onItemSelect)setTimeout(function(){options.onItemSelect(li)},1);
};
function createSelection(start,end){
var field=$input.get(0);
if(field.createTextRange){
var selRange=field.createTextRange();
selRange.collapse(true);
selRange.moveStart("character",start);
selRange.moveEnd("character",end);
selRange.select();
}else if(field.setSelectionRange){
field.setSelectionRange(start,end);
}else{
if(field.selectionStart){
field.selectionStart=start;
field.selectionEnd=end;
}
}
field.focus();
};
function autoFill(sValue){
if(lastKeyPressCode!=8){
$input.val($input.val()+sValue.substring(prev.length));
createSelection(prev.length,sValue.length);
}
};
function showResults(){
var pos=findPos(input);
var iWidth=(options.width>0)?options.width:$input.width();
$results.css({
width:parseInt(iWidth)+"px",
top:(pos.y+input.offsetHeight)+"px",
left:pos.x+"px"
}).show();
};
function hideResults(){
if(timeout)clearTimeout(timeout);
timeout=setTimeout(hideResultsNow,200);
};
function hideResultsNow(){
if(timeout)clearTimeout(timeout);
$input.removeClass(options.loadingClass);
if($results.is(":visible")){
$results.hide();
}
if(options.mustMatch){
var v=$input.val();
if(v!=input.lastSelected){
selectItem(null);
}
}
};
function receiveData(q,data){
if(data){
$input.removeClass(options.loadingClass);
results.innerHTML="";
if(!hasFocus||data.length==0)return hideResultsNow();
if($.browser.msie){
$results.append(document.createElement('iframe'));
}
results.appendChild(dataToDom(data));
if(options.autoFill&&($input.val().toLowerCase()==q.toLowerCase()))autoFill(data[0][0]);
showResults();
}else{
hideResultsNow();
}
};
function parseData(data){
if(!data)return null;
var parsed=[];
var rows=data.split(options.lineSeparator);
for(var i=0;i<rows.length;i++){
var row=$.trim(rows[i]);
if(row){
parsed[parsed.length]=row.split(options.cellSeparator);
}
}
return parsed;
};
function dataToDom(data){
var ul=document.createElement("ul");
var num=data.length;
if((options.maxItemsToShow>0)&&(options.maxItemsToShow<num))num=options.maxItemsToShow;
for(var i=0;i<num;i++){
var row=data[i];
if(!row)continue;
var li=document.createElement("li");
if(options.formatItem){
li.innerHTML=options.formatItem(row,i,num);
li.selectValue=row[0];
}else{
li.innerHTML=row[0];
li.selectValue=row[0];
}
var extra=null;
if(row.length>1){
extra=[];
for(var j=1;j<row.length;j++){
extra[extra.length]=row[j];
}
}
li.extra=extra;
ul.appendChild(li);
$(li).hover(
function(){$("li",ul).removeClass("ac_over");$(this).addClass("ac_over");active=$("li",ul).indexOf($(this).get(0));},
function(){$(this).removeClass("ac_over");}
).click(function(e){e.preventDefault();e.stopPropagation();selectItem(this)});
}
return ul;
};
function requestData(q){
if(!options.matchCase)q=q.toLowerCase();
var data=options.cacheLength?loadFromCache(q):null;
if(data){
receiveData(q,data);
}else if((typeof options.url=="string")&&(options.url.length>0)){
$.get(makeUrl(q),function(data){
data=parseData(data);
addToCache(q,data);
receiveData(q,data);
});
}else{
$input.removeClass(options.loadingClass);
}
};
function makeUrl(q){
var url=options.url+"?q="+encodeURI(q);
for(var i in options.extraParams){
url+="&"+i+"="+encodeURI(options.extraParams[i]);
}
return url;
};
function loadFromCache(q){
if(!q)return null;
if(cache.data[q])return cache.data[q];
//if(options.matchSubset){
//for(var i=q.length-1;i>=options.minChars;i--){
//var qs=q.substr(0,i);
//var c=cache.data[qs];
//if(c){
//var csub=[];
//for(var j=0;j<c.length;j++){
//var x=c[j];
//var x0=x[0];
//if(matchSubset(x0,q)){
//csub[csub.length]=x;
//}
//}
//return csub;
//}
//}
//}
return null;
};
function matchSubset(s,sub){
if(!options.matchCase)s=s.toLowerCase();
var i=s.indexOf(sub);
if(i==-1)return false;
return i==0||options.matchContains;
};
this.flushCache=function(){
flushCache();
};
this.setExtraParams=function(p){
options.extraParams=p;
};
this.findValue=function(){
var q=$input.val();
if(!options.matchCase)q=q.toLowerCase();
var data=options.cacheLength?loadFromCache(q):null;
if(data){
findValueCallback(q,data);
}else if((typeof options.url=="string")&&(options.url.length>0)){
$.get(makeUrl(q),function(data){
data=parseData(data)
addToCache(q,data);
findValueCallback(q,data);
});
}else{
findValueCallback(q,null);
}
}
function findValueCallback(q,data){
if(data)$input.removeClass(options.loadingClass);
var num=(data)?data.length:0;
var li=null;
for(var i=0;i<num;i++){
var row=data[i];
if(row[0].toLowerCase()==q.toLowerCase()){
li=document.createElement("li");
if(options.formatItem){
li.innerHTML=options.formatItem(row,i,num);
li.selectValue=row[0];
}else{
li.innerHTML=row[0];
li.selectValue=row[0];
}
var extra=null;
if(row.length>1){
extra=[];
for(var j=1;j<row.length;j++){
extra[extra.length]=row[j];
}
}
li.extra=extra;
}
}
if(options.onFindValue)setTimeout(function(){options.onFindValue(li)},1);
}
function addToCache(q,data){
if(!data||!q||!options.cacheLength)return;
if(!cache.length||cache.length>options.cacheLength){
flushCache();
cache.length++;
}else if(!cache[q]){
cache.length++;
}
cache.data[q]=data;
};
function findPos(obj){
var curleft=obj.offsetLeft||0;
var curtop=obj.offsetTop||0;
while(obj=obj.offsetParent){
curleft+=obj.offsetLeft
curtop+=obj.offsetTop
}
return{x:curleft,y:curtop};
}
}
jQuery.fn.autocomplete=function(url,options,data){
options=options||{};
options.url=url;
options.data=((typeof data=="object")&&(data.constructor==Array))?data:null;
options.inputClass=options.inputClass||"ac_input";
options.resultsClass=options.resultsClass||"ac_results";
options.lineSeparator=options.lineSeparator||"\n";
options.cellSeparator=options.cellSeparator||"|";
options.minChars=options.minChars||1;
options.delay=options.delay||400;
options.matchCase=options.matchCase||0;
options.matchSubset=options.matchSubset||1;
options.matchContains=options.matchContains||0;
options.cacheLength=options.cacheLength||1;
options.mustMatch=options.mustMatch||0;
options.extraParams=options.extraParams||{};
options.loadingClass=options.loadingClass||"ac_loading";
options.selectFirst=options.selectFirst||false;
options.selectOnly=options.selectOnly||false;
options.maxItemsToShow=options.maxItemsToShow||-1;
options.autoFill=options.autoFill||false;
options.width=parseInt(options.width,10)||0;
this.each(function(){
var input=this;
new jQuery.autocomplete(input,options);
});
return this;
}
jQuery.fn.autocompleteArray=function(data,options){
return this.autocomplete(null,options,data);
}
jQuery.fn.indexOf=function(e){
for(var i=0;i<this.length;i++){
if(this[i]==e)return i;
}
return-1;
};

 //自动完成框辅助函数。
    function findValue(li) {
        if (li == null) return alert("No match!");
        if (!!li.extra)
            var sValue = li.extra[0];
    }
    function selectItem(li) {
        findValue(li);
    }
    function lookupLocal() {
        var oSuggest = $(".ajaxinput")[0].autocompleter;
        oSuggest.findValue();
        return false;
    }

    function ac_onfocus(t) {
        if (t.value == '名称或拼音简写') {
            t.style.color = "Black";
            t.value = ''
        }
    }

    function ac_onblur(t) {
        if (t.value == '') { t.style.color = "Gray"; t.value = '名称或拼音简写'; }
    }