Friday, December 7, 2007

Mistakes During Web Design Part 2

Mistakes During Web Design Part 2

31. Make links visible: the visitor should be able to recognize what is clickable and what is not, easily. Make sure that your links have a contrasting color (the standard blue color is the optimal most of the times). Possibly also make them underlined.


32. Do not underline or color normal text: do not underline normal text unless absolutely necessary. Just as users need to recognize links easily, they should not get the idea that something is clickable when in reality it is not.


33. Make clicked links change color: this point is very important for the usability of your website. Clicked links that change color help the user to locate himself more easily around your site, making sure that he will not end up visiting the same pages unintentionally.

34. Do not use animated GIFs: unless you have advertising banners that require animation, avoid animated GIFs. They make a site look unprofessional and detract the attention from the content.


35. Make sure to use the ALT and TITLE attributes for images: apart from having SEO benefits the ALT and TITLE attributes for images will play an important role for blind users.


36. Do not use harsh colors: if the user is getting a headache after visiting your site for 10 consecutive minutes, you probably should pick a better color scheme. Design the color palette around your objectives (i.e. deliver a mood, let the user focus on the content, etc.).

37. Do not use pop ups: this point refers to pop ups of any kind. Even user requested pop ups are a bad idea given the increasing amount of pop blockers out there.

38. Avoid Javascript links: those links execute a small Javascript when the user clicks on them. Stay away from them since they often create problems for the user.

39. Include functional links on your footer: people are used to scrolling down to the footer of a website if they are not finding a specific information. At the very least you want to include a link to the Homepage and possibly a link to the “Contact Us” page.

40. Avoid long pages: guess what, if the user needs to scroll down forever in order to read your content he will probably just skip it altogether. If that is the case with your website make it shorter and improve the navigation structure.

41. No horizontal scrolling: while some vertical scrolling is tolerable, the same can not be said about horizontal scrolling. The most used screen resolution nowadays is 1024 x 768 pixels, so make sure that your website fits inside it.

42. No spelling or grammatical mistakes: this is not a web design mistake, but it is one of the most important factors affecting the overall quality of a website. Make sure that your links and texts do not contain spelling or grammatical mistakes.

43. If you use CAPTCHA make sure the letters are readable: several sites use CAPTCHA filters as a method of reducing spam on comments or on registration forms. There is just one problem with it, most of the times the user needs to call his whole family to decipher the letters.



Mail me at masteragarwal@yahoo.com to receive latest updates and source cods and be in touch.

Mistakes During Web Design Part 1

Web Design Mistakes You Should Avoid

There are several lists of web design mistakes around the Internet. Most of them, however, are the “Most common” or “Top 10” mistakes. Every time I crossed one of those lists I would think to myself: “Come on, there must be more than 10 mistakes…”. Then I decided to write down all the web design mistakes that would come into my head; within half an hour I had over thirty of them listed. Afterwards I did some research around the web and the list grew to 43 points.

The next step was to write a short description for each one, and the result is the collection of mistakes that you will find below. Some of the points are common sense, others are quite polemic. Most of them apply to any website though, whether we talk about a business entity or a blog. Enjoy!

1. The user must know what the site is about in seconds: attention is one the most valuable currencies on the Internet. If a visitor can not figure what your site is about in a couple of seconds, he will probably just go somewhere else. Your site must communicate why I should spend my time there, and FAST!
2. Make the content scannable: this is the Internet, not a book, so forget large blocks of text. Probably I will be visiting your site while I work on other stuff so make sure that I can scan through the entire content. Bullet points, headers, subheaders, lists. Anything that will help the reader filter what he is looking for.

3. Do not use fancy fonts that are unreadable: sure there are some fonts that will give a sophisticated look to your website. But are they readable? If your main objective is to deliver a message and get the visitors reading your stuff, then you should make the process comfortable for them.

4. Do not use tiny fonts: the previous point applies here, you want to make sure that readers are comfortable reading your content. My Firefox does have a zooming feature, but if I need to use on your website it will probably be the last time I visit it.
5. Do not open new browser windows: I used to do that on my first websites. The logic was simple, if I open new browser windows for external links the user will never leave my site. WRONG! Let the user control where he wants the links to open. There is a reason why browsers have a huge “Back” button. Do not worry about sending the visitor to another website, he will get back if he wants to (even porn sites are starting to get conscious regarding this point lately…).

6. Do not resize the user’s browser windows: the user should be in control of his browser. If you resize it you will risk to mess things up on his side, and what is worse you might lose your credibility in front of him.

7. Do not require a registration unless it is necessary: lets put this straight, when I browse around the Internet I want to get information, not the other way around. Do not force me to register up and leave my email address and other details unless it is absolutely necessary (i.e. unless what you offer is so good that I will bear with the registration).
8. Never subscribe the visitor for something without his consent: do not automatically subscribe a visitor to newsletters when he registers up on your site. Sending unsolicited emails around is not the best way to make friends.
9. Do not overuse Flash: apart from increasing the load time of your website, excessive usage of Flash might also annoy the visitors. Use it only if you must offer features that are not supported by static pages.

10. Do not play music: on the early years of the Internet web developers always tried to successfully integrate music into websites. Guess what, they failed miserably. Do not use music, period.

11. If you MUST play an audio file let the user start it: some situations might require an audio file. You might need to deliver a speech to the user or your guided tour might have an audio component. That is fine. Just make sure that the user is in control, let him push the “Play” button as opposed to jamming the music on his face right after he enters the website.
12. Do not clutter your website with badges: first of all, badges of networks and communities make a site look very unprofessional. Even if we are talking about awards and recognition badges you should place them on the “About Us” page.

13. Do not use a homepage that just launches the “real” website: the smaller the number of steps required for the user to access your content, the better.
14. Make sure to include contact details: there is nothing worse than a website that has no contact details. This is not bad only for the visitors, but also for yourself. You might lose important feedback along the way.
15. Do not break the “Back” button: this is a very basic principle of usability. Do not break the “Back” button under any circumstance. Opening new browser windows will break it, for instance, and some Javascript links might also break them.
16. Do not use blinking text: unless your visitors are coming straight from 1996, that is.
17. Avoid complex URL structures: a simple, keyword-based URL structure will not only improve your search engine rankings, but it will also make it easier for the reader to identify the content of your pages before visiting them.
18. Use CSS over HTML tables: HTML tables were used to create page layouts. With the advent of CSS, however, there is no reason to stick to them. CSS is faster, more reliable and it offers much more features.
19. Make sure users can search the whole website: there is a reason why search engines revolutionized the Internet. You probably guessed it, because they make it very easy to find the information we are looking for. Do not neglect this on your site.
20. Avoid “drop down” menus: the user should be able to see all the navigation options straight way. Using “drop down” menus might confuse things and hide the information the reader was actually looking for.
21. Use text navigation: text navigation is not only faster but it is also more reliable. Some users, for instance, browse the Internet with images turned off.
22. If you are linking to PDF files disclose it: ever clicked on a link only to see your browser freezing while Acrobat Reader launches to open that (unrequested) PDF file? That is pretty annoying so make sure to explicit links pointing to PDF files so that users can handle them properly.
23. Do not confuse the visitor with many versions: avoid confusing the visitor with too many versions of your website. What bandwidth do I prefer? 56Kbps? 128Kbps? Flash or HTML? Man, just give me the content!
24. Do not blend advertising inside the content: blending advertising like Adsense units inside your content might increase your click-through rate on the short term. Over the long run, however, this will reduce your readership base. An annoyed visitor is a lost visitor.
25. Use a simple navigation structure: sometimes less is more. This rule usually applies to people and choices. Make sure that your website has a single, clear navigation structure. The last thing you want is to confuse the reader regarding where he should go to find the information he is looking for.
26. Avoid “intros”: do not force the user to watch or read something before he can access to the real content. This is plain annoying, and he will stay only if what you have to offer is really unique.
27. Do not use FrontPage: this point extends to other cheap HTML editors. While they appear to make web design easier, the output will be a poorly crafted code, incompatible with different browsers and with several bugs.
28. Make sure your website is cross-browser compatible: not all browsers are created equal, and not all of them interpret CSS and other languages on the same way. Like it or not, you will need to make your website compatible with the most used browsers on the market, else you will lose readers over the long term.
29. Make sure to include anchor text on links: I confess I used to do that mistake until some time ago. It is easier to tell people to “click here”. But this is not efficient. Make sure to include a relevant anchor text on your links. It will ensure that the reader knows where he is going to if he clicks the link, and it will also create SEO benefits for the external site where the link is pointing.
30. Do not cloak links: apart from having a clear anchor text, the user must also be able to see where the link is pointing on the status bar of his browser. If you cloak your links (either because they are affiliate ones or due to other reasons) your site will lose credibility.


Mail me at masteragarwal@yahoo.com to receive latest updates and source cods and be in touch.

Computer Triks

Computer Triks




How to Change the Default Icon for Removable Drives.


you are bored seeing the default look of removable drives in Windows, here is a simple tutorial on how to change the default look. The Removable drive looks like this, without any customizations and its confusing if you have more than one drives connected to your PC.





The default look of Removable drives like USB pen drives, Memory Cards for phones and cameras can be changes using these 3 simple steps.





KAV - Multi-year/multi-user Licenses








1. First step is to find a good icon which will represent the removable drive. Make sure that the image has .ico extension.

2. Open Notepad. Type in whatever is given in the image.





Here Label denotes the text which you want to display in My Computer when the drive is connected and Icon represents the icon image name. Save this file as autorun.inf.




3. Copy both files (autorun.inf and Icon file) to your removable drive. You can make both files as hidden, if don’t want to see those files when you are connected to drive


Now unplug the drive and connect it back to USB and now you can see the effect of your customizations.



warning :



All the Tricks which had shown in this site is just for Teaching and Learning purpose.use all tricks on your personal risk.



Mail me at masteragarwal@yahoo.com to receive latest updates and source cods and be in touch.

BLUETOOTH

Bluetooth Technology

Bluetooth is a wireless technology that enables any electrical device to wirelessly communicate in the range of 2.5 GHz ISM frequency band. Mobile phones, headsets, PDA's and portable computers can communicate and send data to each other without wires or cables to link to devices together. The name of Bluetooth derived from the name of an English king Harold Bluetooth.

It a low cost, low power, radio technology, which is particularly suited to the short range Personal Area Network (PAN) application. Bluetooth Special Interest Group is authorized to develop its specifications & license.


The Main Features of Bluetooth are given below:


1. It operates in the 2.4GHz frequency band without having a license for wireless communication.
2. Up to 10-100 meters data can be transfer in real time.
3. Close proximity & accuracy is not required for Bluetooth as in case of infrared data (IrDA) communication device. Bluetooth does not suffer from interference from obstacles such as walls while infrared suffers due to obstacles.
4. Bluetooth supports both point-to-point and point-to-multipoint wireless connections without cables between mobile phones and personal computers.
5. Data transfer rate of blue tooth varies from version to version. Data rate of 1 Mbps for Version 1.2 Up to 3 Mbps for Version 2.0.

Then major parts of Bluetooth system are RF transceiver, base band, and protocol stack. Bluetooth is used for small-area networking without user intervention. Due to extremely low transmission power in Bluetooth technique battery power is saved. It is a networking standard that works at two levels:


· Physical level.
· Protocol level

Due to these levels mobiles have to agree on these levels when bits are sent. It decides the amount of data to be sent at a time, and how the parties in a conversation can be sure that the message received is the same as the message sent.

Bluetooth networking transmits data through low-power radio waves. It can connect up to eight devices simultaneously. With in the range of about ten meters you must think that the devices will not interfere with each other. Bluetooth solved the problem of devices interference while sending the data by using the technique of Spread-Spectrum Frequency Hopping due to which devices may transfer data at the same frequency at the same time. The question rises here is how Bluetooth send the same data using same frequency band without devices interferences? In Bluetooth technique, transmitters change frequencies 1,600 times in every second. In this way devices can make full use of a limited band of the radio spectrum.

When Bluetooth devices came into the range of each other, conversations take place automatically. This conversation automatically determines whether they have the data to share or not. In this way Bluetooth devices not only share the data but also control the data to be transferred. When the connection is established, the devices either they are part of a computer system or a network, Bluetooth systems create a personal-area network.

The technology used in Bluetooth also provides security in three ways:

· Pseudo-random frequency hopping,
· Authentication,
· Encryption.


Frequency hops make it difficult for anyone to eavesdrop. Authentication allows a user to limit connectivity to specified devices. Encryption uses secret keys to make data intelligible only to authorized parties.


Service-level security and device-level security work together to protect Bluetooth devices from unauthorized data transmission.


Many serious problems create only due to improper security issues. Some of them are given below:


Blue jacking
Blue bugging
Car Whisperer

Blue Jacking
It is used to send a business card in the form of text message via Bluetooth to other users. It should be noted that the distance between two users is not more than 10 meters. If the user doesn't found the proper text, he should add the contact to his phone book. After saving his contact in his address book retry to send the same message. In this way the user can get business card from other user via Bluetooth. It’s all because of the known destination from where the massage is being coming.
Blue Bugging
Due to this hackers can access user’s phone. It not only access one’s mobile phone, but also use its features including placing call, messaging. Even though the user doesn't realize it’s happening.
Car WhispererCar whisper is a type of software due to which hackers can send and receive audio file from a Bluetooth-enabled car stereo.

keyboard shortcuts

Few keyboard shortcuts:




CTRL+C (Copy)

CTRL+X (Cut)

CTRL+V (Paste)

CTRL+Z (Undo)

DELETE (Delete)

SHIFT+DELETE (Delete the selected item permanently without placing the item in the Recycle Bin)

CTRL while dragging an item (Copy the selected item)

CTRL+SHIFT while dragging an item (Create a shortcut to the selected item)

F2 key (Rename the selected item)

CTRL+RIGHT ARROW (Move the insertion point to the beginning of the next word)

CTRL+LEFT ARROW (Move the insertion point to the beginning of the previous word)

CTRL+DOWN ARROW (Move the insertion point to the beginning of the next paragraph)

CTRL+UP ARROW (Move the insertion point to the beginning of the previous paragraph)

CTRL+SHIFT with any of the arrow keys (Highlight a block of text)

SHIFT with any of the arrow keys (Select more than one item in a window or on the desktop, or
select text in a document)

CTRL+A (Select all)

F3 key (Search for a file or a folder)

ALT+ENTER (View the properties for the selected item)

ALT+F4 (Close the active item, or quit the active program)

ALT+ENTER (Display the properties of the selected object)

ALT+SPACEBAR (Open the shortcut menu for the active window)

CTRL+F4 (Close the active document in programs that enable you to have multiple documents
open simultaneously)

ALT+TAB (Switch between the open items)

ALT+ESC (Cycle through items in the order that they had been opened)

F6 key (Cycle through the screen elements in a window or on the desktop)

F4 key (Display the Address bar list in My Computer or Windows Explorer)

SHIFT+F10 (Display the shortcut menu for the selected item)

ALT+SPACEBAR (Display the System menu for the active window)

CTRL+ESC (Display the Start menu)

ALT+Underlined letter in a menu name (Display the corresponding menu)

Underlined letter in a command name on an open menu (Perform the corresponding command)

F10 key (Activate the menu bar in the active program)

RIGHT ARROW (Open the next menu to the right, or open a submenu)

LEFT ARROW (Open the next menu to the left, or close a submenu)

F5 key (Update the active window)

BACKSPACE (View the folder one level up in My Computer or Windows Explorer)

ESC (Cancel the current task)

SHIFT when you insert a CD-ROM into the CD-ROM drive (Prevent the CD-ROM from
automatically playing)

CTRL+SHIFT+ESC (Open Task Manager)


WINDOWS KEYBOARD SHORTCUT'S


Windows Logo (Display or hide the Start menu)

Windows Logo+BREAK (Display the System Properties dialog box)

Windows Logo+D (Display the desktop)

Windows Logo+M (Minimize all of the windows)

Windows Logo+SHIFT+M (Restore the minimized windows)

Windows Logo+E (Open My Computer)

Windows Logo+F (Search for a file or a folder)

CTRL+Windows Logo+F (Search for computers)

Windows Logo+F1 (Display Windows Help)

Windows Logo+ L (Lock the keyboard)

Windows Logo+R (Open the Run dialog box)

Windows Logo+U (Open Utility Manager)


FEW DIALOG BOX SHORTCUTS



If you press SHIFT+F8 in extended selection list boxes, you enable extended selection mode. In this mode, you can use an arrow key to move a cursor without changing the selection. You can press CTRL+SPACEBAR or SHIFT+SPACEBAR to adjust the selection. To cancel extended selection mode, press SHIFT+F8 again. Extended selection mode cancels itself when you move the focus to another control.

Below are some more simple and usefull tips:

CTRL+TAB (Move forward through the tabs)

CTRL+SHIFT+TAB (Move backward through the tabs)

TAB (Move forward through the options)

SHIFT+TAB (Move backward through the options)

ALT+Underlined letter (Perform the corresponding command or select the corresponding option)

ENTER (Perform the command for the active option or button)

SPACEBAR (Select or clear the check box if the active option is a check box)

Arrow keys (Select a button if the active option is a group of option buttons)

F1 key (Display Help)

F4 key (Display the items in the active list)

BACKSPACE (Open a folder one level up if a folder is selected in the Save As or Open dialog box)

warning :


All the Tricks which had shown in this site is just for Teaching and Learning purpose.use all tricks on your personal risk.



Mail me at masteragarwal@yahoo.com to receive latest updates and source cods and be in touch.