;(function($){
$.fn.jqsearch = function (options) {	
    var defaults = {
        txtval: "输入关键词搜索！",
        keytxt1: "输入关键词搜索！",
        keytxt2: "输入的关键词字数不要过多！",
        keytxt3: "您输入的内容存在特殊字符！",
        keyid: "topkey",
        keyurl: "#",
        otherurl: "",
        otherparams: "",
        othertxtval: "请选中筛选或输入关键词搜索！",
        keyhref: "key",
        static: false
    };
    var opts = $.extend(defaults, options);

    return this.each(function () {
        _this = $(this);
        if ($("#" + opts.keyid).val() == "") {
            $("#" + opts.keyid).val(opts.txtval);
        }
        $("#" + opts.keyid).focus(function () {
        	_this.addclass("focus");
        	$(this).addclass("focus");
            if ($(this).val() == opts.txtval) {
                $(this).val("");
            }
        });
        $("#" + opts.keyid).blur(function () {
        	_this.removeclass("focus");
        	$(this).removeclass("focus");
            if ($(this).val() == "") {
                $(this).val(opts.txtval);
            }
        });
        function gosearchurl() {
            var searchinput = document.getelementbyid(opts.keyid);
            var isnull = true;
            //静态
            var staticlinks = opts.keyurl;
            if (typeof (opts.otherparams) == "function") {
                var params = opts.otherparams();
                for (var property in params) {
                    isnull = false;
                    if (opts.static) {
                        staticurl += "_" + property + "_" + params[property];
                    } else {
                        if (opts.otherurl != "") {
                            opts.otherurl = appendurlparmfun(opts.otherurl, property, params[property]);
                        } else {
                            opts.keyurl = appendurlparmfun(opts.keyurl, property, params[property]);
                        }
                    }
                }
            }
            if (typeof (opts.otherparams) == "function" && isnull && (searchinput.value == "" || searchinput.value == opts.txtval)) {
                alert(opts.othertxtval);
                return false;
            }
            if (!isnull && opts.otherurl != "") {
                window.location = opts.otherurl;
                return false;
            }
            if (isnull && (searchinput.value == "" || searchinput.value == opts.txtval)) {
                alert(opts.keytxt1);
                searchinput.focus();
                return false;
            }
            if (isnull && (searchinput.value == "" || searchinput.value == opts.txtval)) {
                alert(opts.keytxt1);
                searchinput.focus();
                return false;
            }
            if (searchinput.value.length > 50) {
                alert(opts.keytxt2);
                searchinput.focus();
                return false;
            }
            var pattern = new regexp("[`~!@#$^&*()=|{}':;',\\[\\].<>/?~！@#￥……&*（）—|{}【】‘；：”“'。，、？]");
            if (pattern.test(searchinput.value)) {
                alert(opts.keytxt3);
                searchinput.focus();
                return false;
            }
            if (!(searchinput.value == "" || searchinput.value == opts.txtval)) {
                if (opts.static) {
                    //静态
                    staticlinks = opts.keyurl;
                    staticurl = "_" + opts.keyhref + "_" + searchinput.value + ".html"
                    staticlinks = staticlinks.replace(".html", staticurl);
                    window.location = staticlinks;
                } else {
                    //动态
                    if (opts.keyurl.indexof("?") == -1) {
                        window.location = opts.keyurl + "?" + opts.keyhref + "=" + escape(searchinput.value);

                    } else {
                        window.location = opts.keyurl + "&" + opts.keyhref + "=" + escape(searchinput.value);
                    }
                }
            } else {
                if (opts.static) {
                    window.location = staticlinks;
                }
                else {
                    window.location = opts.keyurl;
                }
            }

            return true;
        }

        function entersearch() {
            var event = window.event || arguments.callee.caller.arguments[0];
            if (event.keycode == 13) {
                gosearchurl();
            }
        }

        function checkcomments() {
            var event = window.event || arguments.callee.caller.arguments[0];
            if ((event.keycode > 32 && event.keycode < 48) || (event.keycode > 57 && event.keycode < 65) || (event.keycode > 90 && event.keycode < 97)) {
                event.returnvalue = false;
            }
        }

        function stripscript(s) {
            var pattern = new regexp("[`~!@#$^&*()=|{}':;',\\[\\].<>/?~！@#￥……&*（）&mdash;—|{}【】‘；：”“'。，、？]");
            var rs = "";
            for (var i = 0; i < s.length; i++) {
                rs = rs + s.substr(i, 1).replace(pattern, '');
            }
            return rs;
        }

        function appendurlparmfun(url, key, value) {
            var arrayparams = url.split("?");
            var result = arrayparams[0] + "?";
            if (url.indexof("?") > 0) {
                var parms = arrayparams[1].split("&");
                var exsit = false;
                for (var i = 0; i < parms.length; i++) {
                    var param = parms[i].split("=");
                    if (param[0] == key) {
                        exsit = true;
                        result += param[0] + "=" + value + "&"; //修改参数
                    } else {
                        result += param[0] + "=" + param[1] + "&"; //保持原样
                    }
                }
                if (exsit == false) {
                    result += key + "=" + value + "&"; //不存在时，附加参数
                }

            } else {
                result += key + "=" + value;
            }
            result = result.substring(result.length - 1, result.length) == "&" ? result.substring(0, result.length - 1) : result;
            return result;
        }

        _this.click(function () {
            gosearchurl()
        });

        $("#" + opts.keyid).keydown(function () {
            entersearch()
        });
    })
}
})(jquery);