我的jQuery运行有点慢.我该如何加快速度

我能做些什么来加快速度吗？或者你有没有注意到新手犯的错误？

我注意到我重复了很多变量。这就是为什么我不必写出每一行，但我不确定是否有更好的解决方案？

这个问题通常发生在不戴标签后切换回标签时。点击外环需要几秒钟才能做出响应，但之后就没事了。就像有剩余的代码在运行一样，它需要重写吗？我不确定，但我希望有经验的用户能够仔细阅读我的代码，看看可以改进什么。

这是一个正在工作的jsFiddlehttp://jsfiddle.net/eA6x6/1/，下面是我的全部javascript代码。

jQuery(document).ready(function() {
var timeoutHandle;
// hide stuff
    var hideServices = function() {
            jQuery(".services-inner").css({"opacity": "0"});
            jQuery(".insignia-inner").css({"opacity": "0"});
            jQuery(".insignia-inner-text").css({"opacity": "0"});
    };
    var hideAll = function() {
            jQuery(".military-kit-inner").css({"opacity": "0"});
            jQuery(".property-inner").css({"opacity": "0"});
            jQuery(".home-contents-inner").css({"opacity": "0"});
            jQuery(".travel-inner").css({"opacity": "0"});
            jQuery(".events-inner").css({"opacity": "0"});
            jQuery(".adventurous-training-inner").css({"opacity": "0"});
            jQuery(".personal-injury-inner").css({"opacity": "0"});
            jQuery(".challenge-pursuits-inner").css({"opacity": "0"});
            jQuery(".sports-and-tours-inner").css({"opacity": "0"});
            jQuery(".winter-sports-inner").css({"opacity": "0"});
            jQuery(".now-available").css({"opacity": "0"});
            jQuery(".now-available-background").css({"opacity": "0"});
            jQuery(".launched-shortly").css({"opacity": "0"});
            jQuery(".launched-shortly-background").css({"opacity": "0"});
    };
    var showServicesDelay = function() {
            timeoutHandle = setTimeout(function () {
                    jQuery(".services-inner").css({"opacity": "0.5"});
                jQuery(".insignia-inner").css({"opacity": "1"});
                jQuery(".insignia-inner-text").css({"opacity": "1"});
                hideAll();
        }, 5000);       
    };
// show messages
    var showLaunchedShortly = function() {
            jQuery(".launched-shortly").css({"opacity": "1"});
            jQuery(".launched-shortly-background").css({"opacity": "1"});
    };
    var showNowAvailable = function() {
            jQuery(".now-available").css({"opacity": "1"});
            jQuery(".now-available-background").css({"opacity": "1"});
    };
// show services
    var showMilitaryKit = function() {
            jQuery(".military-kit-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };
    var showProperty = function() {
            jQuery(".property-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);    
    };
    var showHomeContents = function() {
            jQuery(".home-contents-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };
    var showTravel = function() {
            jQuery(".travel-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };
    var showEvents = function() {
            jQuery(".events-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };
    var showAdventurousTraining = function() {
            jQuery(".adventurous-training-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };
    var showPersonalInjury = function() {
            jQuery(".personal-injury-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };
    var showChallengePursuits = function() {
            jQuery(".challenge-pursuits-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };
    var showSportsAndTours = function() {
            jQuery(".sports-and-tours-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };
    var showWinterSports = function() {
            jQuery(".winter-sports-inner").css({"opacity": "1"});
            clearTimeout(timeoutHandle);
    };


// military kit
    jQuery(".military-kit-hover").click(function() {        
        hideAll();
        hideServices();
        showMilitaryKit();
        showServicesDelay();
        showNowAvailable();
    });
// property
    jQuery(".property-hover").click(function() {
        hideAll();
        hideServices();
        showProperty();
        showServicesDelay();
        showNowAvailable();
    }); 
// home contents
    jQuery(".home-contents-hover").click(function() {
        hideAll();
        hideServices();
        showHomeContents();
        showServicesDelay();
        showNowAvailable();
    }); 
// travel
    jQuery(".travel-hover").click(function() {
        hideAll();
        hideServices();
        showTravel();
        showServicesDelay();
        showNowAvailable();
    }); 
// events
    jQuery(".events-hover").click(function() {
        hideAll();
        hideServices();
        showEvents();
        showServicesDelay();
        showLaunchedShortly();
    }); 
// adventurous training
    jQuery(".adventurous-training-hover").click(function() {
        hideAll();
        hideServices();
        showAdventurousTraining();
        showServicesDelay();
        showLaunchedShortly();
    }); 
// personal injury
    jQuery(".personal-injury-hover").click(function() {
        hideAll();
        hideServices();
        showPersonalInjury();
        showServicesDelay();
        showNowAvailable();
    }); 
// challenge pursuits
    jQuery(".challenge-pursuits-hover").click(function() {
        hideAll();
        hideServices();
        showChallengePursuits();
        showServicesDelay();
        showNowAvailable();
    }); 
// sports and tours
    jQuery(".sports-and-tours-hover").click(function() {
        hideAll();
        hideServices();
        showSportsAndTours();
        showServicesDelay();
        showLaunchedShortly();
    }); 
// winter sports
    jQuery(".winter-sports-hover").click(function() {
        hideAll();
        hideServices();
        showWinterSports();
        showServicesDelay();
        showLaunchedShortly();
    }); 
});