jQuery插件 selectToSelect使用方法

以前总想到网上找一个这样的，但是一直没有找到,所以我自己写了一个。希望能帮助到看到的童鞋。
如果谁有更强大的插件，跟我留一个地址，非常感谢!
效果如下:

代码如下:

复制代码 代码如下:

(function($){
    $.fn.selectToSelect=function(options){
        if($.type(options)=="string"){
            var $this=$(this);
            if(options=="getSelectedIds"){
                var ids="";
                var arr=$("#"+$this.attr("id")+"seReSelect option");
                arr.each(function(i){
                     if(arr.length-1==i){
                        ids+=$(this).attr("id");
                     }else{
                        ids+=$(this).attr("id")+",";
                     }
                });
                return ids;
            }
            return $this;
        }
        var defaults={
            size:10,
            opSelect:[],
            opReSelect:[],
            onChange:function(data){}
        };
        var opts= $.extend(defaults,options);
        return this.each(function(){
           var $this=$(this);
            var str="<table>";
            str+="<tr>";
            str+="<td>";
            str+="<select multiple='multiple' size='"+opts.size+"'>";
            for(var i=0;i<opts.opSelect.length;i++){
                str+="<option value='"+opts.opSelect[i].id+"'>"+opts.opSelect[i].name+"</option>"
            }
            str+="</select>";
            str+="</td>";
            str+="<td> ";
            str+="<table>";
            str+="  <tr>";
            str+="    <td><button type='button'>&gt;&gt;</button></td>";
            str+="  </tr>";
            str+="  <tr>";
            str+="    <td><button type='button'>&nbsp;&nbsp;&gt;</button></td>";
            str+="  </tr>";
            str+="  <tr><td></td></tr>";
            str+="  <tr> ";
            str+="   <td><button type='button'>&lt;&nbsp;&nbsp;</button></td>";
            str+="  </tr> ";
            str+="  <tr>  ";
            str+="    <td><button type='button'>&lt;&lt;</button></td>  ";
            str+="  </tr> ";
            str+="</table>";
            str+="</td>";
            str+="<td>";
            str+=" <select multiple='multiple' size='"+opts.size+"'> ";
            for(var i=0;i<opts.opReSelect.length;i++){
                str+="<option value='"+opts.opReSelect[i].id+"'>"+opts.opReSelect[i].name+"</option>"
            }
            str+=" </select>";
            str+="</td>";
            str+="<td> ";
            str+="  <table>   ";
            str+="    <tr>    ";
            str+="       <td><button type='button'>↑</button></td> ";
            str+="    </tr> ";
            str+="    <tr>  ";
            str+="       <td><button type='button'>↓</button></td>  ";
            str+="    </tr> ";
            str+="    <tr><td></td></tr>";
            str+="  </table>";
            str+="</td>";
            str+="</tr>";
            str+="</table>";
           $this.html(str);
            //need juqery ui plugin
           $this.find("button").button();
            //"+$this.attr("id")+"
           $this.find("#"+$this.attr("id")+"btnSelectAll").click(function(){
               $this.find("option[name='"+$this.attr("id")+"opSelect']").each(function(i){
                   $("<option value='"+this.value+"'>"+$(this).text()+"</option>").appendTo("#"+$this.attr("id")+"seReSelect");
               });
               $("#"+$this.attr("id")+"seSelect").empty();
               opts.onChange($("option[name='"+$this.attr("id")+"opReSelect']"));
           });