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Cookie hanlder in Javascript
var JSUtil = {
    isIE : function(){
        return navigator.appName == "Microsoft Internet Explorer";
    },
    trim : function(str){
        return str.replace(/^\s*([\S\s]*)\b\s*$/, '$1');
    },
    setCookie : function(name, value){
        document.cookie = name + "=" + value + ";";
    },
    getCookies : function(){
        var cookies = document.cookie.split(";");
        var cookieContainer = [];
        for(var i in cookies){
            var cookieString = this.trim(cookies[i]);
            cookieContainer.push({name : cookieString.split("=")[0], value : cookieString.split("=")[1] || null});
        }
        return cookieContainer;
    },
    getCookie : function(name){
        var cookies = this.getCookies();
        for(var i in cookies)
            if(name == cookies[i].name) return cookies[i].value;
        return null;
    },
    removeCookie : function(name){
        document.cookie = name + "=;expires=" + (new Date(0)).toGMTString();
    },
    getParams : function(){
        var queryString = location.search;
        var params = [];
        if(queryString){
            queryString = queryString.substring(1, queryString.length);
            var querys = queryString.split("&");
            for(var i in querys){
                params.push({name : querys[i].split("=")[0], value : querys[i].split("=")[1] || null});
            }
        }
        return params;
    },
    getParam : function(name){
        var params = this.getParams();
        for(var i in params)
            if(name == params[i].name) return params[i].value;
        return null;
    }
}