Jquery Select 插件 lyhucSelect 数据联动

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var areaInfo = new Array();
areaInfo[0] = new Array();
areaInfo[0][0]="1";
areaInfo[0][1]="Beijing";
areaInfo[0][2]="0";
areaInfo[0][3]="0";
areaInfo[1] = new Array();
areaInfo[1][0]="2";
areaInfo[1][1]="Shanghai";
areaInfo[1][2]="0";
areaInfo[1][3]="0";
areaInfo[2] = new Array();
areaInfo[2][0]="3";
areaInfo[2][1]="Jing'an";
areaInfo[2][2]="2";
areaInfo[2][3]="0";
areaInfo[3] = new Array();
areaInfo[3][0]="4";
areaInfo[3][1]="Changning";
areaInfo[3][2]="2";
areaInfo[3][3]="0";
areaInfo[4] = new Array();
areaInfo[4][0]="5";
areaInfo[4][1]="Luwan";
areaInfo[4][2]="2";
areaInfo[4][3]="0";
areaInfo[5] = new Array();
areaInfo[5][0]="6";
areaInfo[5][1]="Huangp";
areaInfo[5][2]="2";
areaInfo[5][3]="0";
areaInfo[6] = new Array();
areaInfo[6][0]="7";
areaInfo[6][1]="Pudong";
areaInfo[6][2]="2";
areaInfo[6][3]="0";
areaInfo[7] = new Array();
areaInfo[7][0]="8";
areaInfo[7][1]="Minhang";
areaInfo[7][2]="2";
areaInfo[7][3]="0";
areaInfo[8] = new Array();
areaInfo[8][0]="9";
areaInfo[8][1]="Qingpu";
areaInfo[8][2]="2";
areaInfo[8][3]="0";
areaInfo[9] = new Array();
areaInfo[9][0]="10";
areaInfo[9][1]="Hongkou";
areaInfo[9][2]="2";
areaInfo[9][3]="0";
areaInfo[10] = new Array();
areaInfo[10][0]="11";
areaInfo[10][1]="Zhabei";
areaInfo[10][2]="2";
areaInfo[10][3]="0";
areaInfo[11] = new Array();
areaInfo[11][0]="12";
areaInfo[11][1]="Putuo";
areaInfo[11][2]="2";
areaInfo[11][3]="0";
areaInfo[12] = new Array();
areaInfo[12][0]="13";
areaInfo[12][1]="Yangpu";
areaInfo[12][2]="2";
areaInfo[12][3]="0";
areaInfo[13] = new Array();
areaInfo[13][0]="14";
areaInfo[13][1]="Others";
areaInfo[13][2]="2";
areaInfo[13][3]="0";

(function($) {
     $.fn.lyhucSelect = function(options) {
        
                var element     = this;
                var elementid     =  "#" + element[0].id;
                
                 var defaults = {
                        dataSource:{},
                        subSelect:'#subcategory',
                        option:{text:'--Select--',value:''},
                        value:'0',
                        parentid:0
                };
                
                var options = $.extend(defaults, options);
                var defaultoption = new Option();
                var defaultsuboption = new Option();

                (function init(){
                        defaultoption.text=options.option.text;
                        defaultoption.value=options.option.value;
                        $(elementid).append(defaultoption);
                        
                        defaultsuboption.text=options.option.text;
                        defaultsuboption.value=options.option.value;
                        $(options.subSelect).append(defaultsuboption);
                        
                        $(options.dataSource).each(function(i){
                                var id=options.dataSource[i][0];
                                var mc=options.dataSource[i][1];
                                
                                if(options.parentid==options.dataSource[i][2])
                                {
                                        var newoption = new Option();
                                        newoption.value=id;
                                        newoption.text=mc;
                                        $(elementid).append(newoption);
                                }
                        });
                
                })();
                                
                return this.each(function(){
                                
                                $(this).bind("change",function(e){
                                        var currentVal=$(this).val();
                                        var tmpDepth=0;
                                        
                                        $(options.subSelect).empty();
                                        
                                        $(options.dataSource).each(function(i){
                                                
                                                var id=options.dataSource[i][0];
                                                var mc=options.dataSource[i][1];
                                                
                                                if(currentVal==options.dataSource[i][2])
                                                {
                                                        var newoption = new Option();
                                                        newoption.value=id;
                                                        newoption.text=mc;
                                                        $(options.subSelect).append(newoption);
                                                        tmpDepth++;
                                                }
                                        });
                                        
                                        if(tmpDepth==0)
                                        {
                                                var parentoption = new Option();
                                                parentoption.value=$(elementid).val();
                                                parentoption.text=$(elementid).find('option:selected').text();
                                                $(options.subSelect).append(parentoption);
                                        }
                                        
                                });
                                
                        });

    };
        

})(jQuery);