func_calls_manager.js

var funcCalls = {
    /**
     * Hash - func-name => last-called-timestamp
     */
    timestamp: {},

    /**
     * Hash func-name => calls count
     */
    count: {},

    update: function() {}
};

/**
 * @param {String} - f - Function.toString result
 * @return {String}
 */
var getFuncName = function(f) {
    //not implemented
};


var callsManager = {
    MS_LIMIT: 1000,
    CALLS_LIMIT: 5,

    callFunc: function(func, context, args) {
        var funcName = getFuncName(func),
            calledMSAgo = (Date.now() - funcCalls.timestamp[funcName]);

        if(funcName in funcCalls.timestamp
            && calledMSAgo < this.MS_LIMIT
            && funcCalls.count[funcName] >= this.CALLS_LIMIT
        ) {
            setTimeout(function() {
                func.apply(context, args);
                funcCalls.update(funcName, Date.now());
            }, this.MS_LIMIT - calledMSAgo);

            return;
        }

        funcCalls.update(funcName, Date.now());
        func.apply(context, args);
    }
};