var text;
var value;
var type;
var selected;
var keep;

jQuery.fn.FillOptions = function(url, options) {
    if (url.length == 0) throw "request is required";
    text = options.textfield || "text";
    value = options.valuefiled || "value";
    type = options.datatype.toLowerCase() || "json";
    if (type != "xml") type = "json";
    keep = options.keepold ? true : false;
    selected = options.selectedindex || 0;

    $.ajaxSetup({ async: false });
    var datas;
    if (type == "xml") {
        $.get(url, function(xml) { datas = xml; });
    }
    else {
        $.getJSON(url, function(json) { datas = json; });
    }
    
    if (datas == undefined) {
        alert("no datas");
        return;
    }

    this.each(function() {
        if (this.tagName == "SELECT") {
            var select = this;
            if (!keep) $(select).html("");
            addOptions(select, datas);
			
			if(typeof(defaultSelect)!='undefined') this.value  = defaultSelect;
        }
    });
}


function addOptions(select, datas) {
    var options;
    var datas;
    if (type == "xml") {
        $(text, datas).each(function(i) {
            option = new Option($(this).text(), $($(value, datas)[i]).text());
            if (i == selected) option.selected = true;
            select.options.add(option);
        });
    }
    else {
        $.each(datas, function(i, n) {
            option = new Option(eval("n." + text), eval("n." + value));
            if (i == selected) option.selected = true;
            select.options.add(option);
        });
    }
}