By giving a form less data to digest, you can make it run more efficiently. These two tips can help.

Another way you can improve performance is to use only default formatting cialis en francais and properties for most or all of the form controls. Your form will load faster because Access does not have to load the non-default form and control properties. If you must change the defaults for most of the controls in your form, create one control with the desired properties and make that the default control. To do so, follow these steps:

1. Add a control to your form and change its defaults according to your form’s requirements.
2. With the control selected, go to Format | Set Control Defaults.

Now, when you add the control to your form, it will have the same properties as the first one. Access saves only the properties of the default control; it does not need to store each control’s individual properties.

February 9th, 2009

Posted by Andrew Mager

Steve Souders knows how to make a website speed through a web browser.

cialis ejaculation href=”http://www.flickr.com/photos/mager/3267072847/” title=”Steve Souders from Google by magerleagues, on Flickr”>

And he works at Google, one of the fastest websites around.

Web performace is a two-pronged beast: efficiency and response time. Efficiency deals with the scalability challenges of building a top 100 global website. You have millions of users and billions of page views, and it’s awe-inspiring to understand the full scope of the backend architecture of something that large.

The set of directions that the HTML document gives to every process really determines the speed of the page.

On iGoogle for example, only 17% of the page is backend, non-cached data and needs to be requested each time. The rest is front-end processing.

80-90% of the end-user response time is spent on the front-end. Start there when you want to figure out how you can make your site faster.

If you can cut this front-end time in half, your users will notice it.
Offer greater potential for improvement and notice simple performance tweaks on the backend too.

14 tips for performance

1. Make fewer HTTP requests
2. Use a CDN
3. Add an Expires header
4. Gzip components
5. Put stylesheets at the top
6. Put scripts at the bottom
7. Avoid CSS expressions
8. Make JS and CSS external
9. Reduce DNS lookups
10. Minify JS
11. Avoid redirects
12. Remove duplicate scripts
13. Configure ETags
14. Make AJAX cacheable

YSlow is a Firebug extension that gives developers the chance to analyze every slow part of your website and test it against the 14 points mentioned above.

O’Reilly Velocity is a web performance and operations conference co-founded by Souders and Tim O’Reilly. There should be some really good talks this year.

Souders also taught a class at Stanford called High Performance Websites.

Why focus on Javascript? They have a huge impact on the page load time.

AOL has about 5 scripts accounting for about 60 or 80% load time.

Facebook has about a megabyte of Javascript.

JS is downloaded sequentially, even if the HTML document has already been downloaded. It won’t draw anything on the screen unless the script is finished downloading.

Cuzillion is a tool that does batch testing on webpages.

HTTPWatch is his preferred packet sniffer.

If you can split the Javascript in what’s needed to render and “everything else”, you will dramatically improve your page load time. Microsoft has a whitepaper that talks about how this can be done automatically with something called Doloto. Look at the source code of MSN.com and see how they do it.

But even if you can split the initial page load, you will still have external scripts that will have an impact on your page.

There are many ways to make your scripts load all at the same time. XHR evaluation is an option but you are open to XSS attacks and all scripts must have the same domain.

Putting a script in an iframe causes the JS to be downloaded in parallel with other resources on the page. You can use the DOM method for creating the head element using createElement.

Try the <script defer src="file.html">. This works in IE and FF 3.1, but it’s not the best method. Domains can differ and you don’t have to refactor your code though.

Don’t even use the document.write method. It’s terrible for many reasons.

It’s always good to show busy indicators when the user needs feedback. Lazy-loading code sucks, but the user needs to know that the page isn’t done.

Ask yourself three questions:

• What’s the URL of the script?
• Do I want to trigger busy signals?
• Does this script have to be executed in order or not?

Sometimes the user is waiting for their inbox to load, and you need the scripts to load in order. Other times it won’t matter.

The best part: none of these techniques are that hard to implement.

Don’t let scripts block other downloads either.

Stylesheets load in parallel, but if you have a stylesheet followed by an inline script, parallel downloads are broken.

Also, use link instead of @import.

Here is a link to Souders’ UA profiler. It’s a chart of all the compatibilities among all browsers regarding fast loading pages. Or as Souders puts it, a “community-driven project for gathering browser performance characteristics”.

He also built something called Hammerhead, which adds a little tab to Firebug that tells you the load time of the page. It also clears the cache in between load times. You can compare websites side by side too.

In HTTP 1.1 you can do transfer encoding in chunks. Your browser can un-gzip even a partial HTML document and start parsing it before the stylesheet is even loaded. CNET.com does this.

IE7 will open two connections per server name, unless the traffic is HTTP 1.0. Optimize images with smush.it

Takeaways

Focus is on the front end. Many front end engineers are learning on the job, kinda teaching themselves. It’s an under-represented but a critical part of the web community.

Everything is going Javascript. It’s the most painful thing to deal with on the page, and we need to identify and adopt some best practices in that space.

Speed matters. If you are waiting, you get bored and frustrated. When Google slowed down 500ms, they lost 20% traffic. Yahoo sped up their search results page only 400ms, and they got 5-10% faster. Amazon ties a 100ms latency to 1% sales loss. A faster page has an impact on revenue and cost savings.

Here is a link to Steve’s presentation »

Souders wrote High Performance Websites in 2007.

Weather plays a big part in your day when you're out taking pictures. Because of that, it helps if you weatherproof your camera. If you're using a camera that has an extended lens and accepts filter lenses, this tip should definitely help to ensure that weather doesn’t come between you and the scene you're trying to capture!

Tools Required

One plastic bag, one rubber band and an ultraviolet (UV) filter. Note: In the screenshots below, the UV filter is already mounted on the camera lens, which is why you won’t see the lens separately.

Step 1:

Mount the UV filter on your camera’s lens. Once that's done, cut a hole in the plastic bag and smuggle the camera inside it in such a way that the camera lens sticks cialis effectiveness out of the hole. That means, the entire camera is hidden inside the plastic bag, except for the camera lens sticking out.

Step 2:

Wrap a rubber band around the UV filter in such a way that the plastic bag is pinched against it. That's to ensure grip and to prevent the plastic from covering the lens when a picture is being taken.

Step 3:

Your camera is now weatherproofed! All you need to do is practice, practice, practice. After all, unlike before, you now need to put your hand inside the plastic bag and operate the camera. That might take some getting used to, but the trade off is great: your expensive equipment is saved from the rain and snow and you'll come away with some great shots!

And Finally…

Sometimes the wind can be overwhelming. That's particularly true when you're in the great outdoors and shooting landscapes. In such circumstances, you just need another inexpensive rubber band to close the hole in the bag. The rest remains the same. Simply continue to operate the camera through the plastic bag and you'll have all-weather gear that's inexpensive as well.

However, if you have the money, another way to protect your shooting gear is to buy a rain hood for your camera. Or, if you're not ready to invest in a rain hood, you could also try wrapping a towel around your camera to keep the rain or snow away. Either way, I wish you happy shooting!

I know there are several of you out there who are proud Opera Web browser users. I just started using Opera a few months ago and even though it hasn’t replaced Firefox for me yet, it boasts some neat features you may not even know about. So, I’m here today to tell you all about them. Let’s get right to it!

If you're completely new to Opera, you can download it on http://www.opera.com. Also, be sure to read through WorldStart's tip archives, because we've done several Opera articles in the past!

The cialis drug impotence first feature is Opera Link. It’s very similar to Firefox's Foxmarks, but it's a little better. Opera Link synchronizes not only bookmarks, but also Speed Dial, Personal Bar, Notes, Typed Browser History and Custom searches.

1.) To get started, you need to create a My Opera account. Choose a username, password and enter in your e-mail address. When you're finished, click on the Sign Up button.

2.) You'll then see a “Welcome to My Opera” page. Now, you just need to set up Opera Link.

3.) To synchronize all your bookmarks and settings, go to File, Synchronize Opera. If you click on Options, you can select what information you want to be synchronized. Then click Log In.

4.) You’re now done! To synchronize between multiple computers, just repeat step 3. It's as easy as pie!

The other feature I wanted to show you in Opera is only for those of you who have a microphone. Opera has a setting for voice commands, which means you can sit back and browse by simply using your voice!

1.) To enable the voice controlled browsing, select Tools, Preferences, Advanced, Voice.

2.) Check the box that says "Enable voice controlled browsing." You can also select which key to press to make Opera listen to your voice or if you don’t want to use a key at all.

3.) The real magic happens when you click on Edit. That's where you can see all of the voice commands Opera has to offer. You can go back and forth between pages, log in, zoom, access your Speed Dial Web sites and so much more! Just remember to say Opera before each command or it won’t hear you.

That’s all for now, so go on and take these features for a spin. I promise they'll make your Web experience so much easier!