Briefly unavailable for scheduled maintenance. Check back in a minute.

Now to get rid of this deadlock, follow the steps mentioned below :

1. Open your favorite FTP client and browse to the directory where the affected blog’s wp-config.php is located.
2. You will find a file named .maintenance over there, similar to .htaccess (yes the dot is intentional)
3. Now remove or rename this file and refresh the blog page. It should solve the problem.

Hope that helps.

Stay Digified !!

Sachin Khosla

Related posts:

1. Securing your wordpress folders from being viewed or indexing
2. How to integerate page navigation in wordpress
3. Install wordpress in different directory or folder

1. An object of the browser’s XML HTTP Request is created and a request is sent to a particular URL with some data either via POST or GET method.
2. The request is processed and the response is returned by the server.
3. Using JavaScript this response is then show on the browser or is used as per the requirement.

Both Asynchronous or Synchronous AJAX requests involve the same process of making the request and getting the response from the server. The only difference is that in an Asynchronous request the process is handled independently and is not dependent on following processes. So that the script do not wait for the server request to complete before executing the remaining lines of code. As soon as the server response is completed it is sent back to the client, but during the complete round-trip the client is not halted.

However in case of Synchronous AJAX request, the request is sent to the server and the client waits for the server’s response before it executes the script further. So this is the special case when the further script is dependent on the results returned by the server.

How do we make these requests?

It is very simple to set what type of AJAX request you want to make. All you need to do is pass true or false while sending the request. Look the code snippet below to see how it is done.

function pullAJAX()
{
  var obj; 
 
  obj = new XMLHttpRequest();
 
  obj.onreadystatechange = function()
  {
    if(obj.readyState == 4)
    {
      //process the response
    }
  }
  //true - makes the Asynchronous AJAX request, false makes it Synchronous
  obj.open("POST", "myscript.php", true);
  obj.send(null);
}

In the above lines of code the open function accepts three parameters, they are :

First param, is the request method which can be POST or GET

Second param, is the script name on the server.

Third param, is responsible for changing AJAX request to Asynchronous or Synchronous. If we pass it true then the AJAX request is made asynchronous, however if passed false it is a synchronous request.

Hope this clarifies the difference between the two. Now it depends upon the scenario as to what AJAX request is needed.

Stay Digified !!
Sachin Khosla

Related posts:

1. is_object function for javascript
2. Check username availability and validation using ajax,php
3. Ajax powered city state Dropdown

In usual scenario one tends to change/add JavaScript function in the following way, which is not the correct way to do so,

//THIS WILL NOT WORK
<script>
function change_event()
{
    document.getElementById('my_tag').onclick = "new_func();"
}
</script>
<a href="#" id="my_tag" onclick="change_event();" >My test</a>

However, if we wrap the function in an anonymous function then we surely can achieve what we wanted to. Look at the following example.

//THIS WILL WORK
<script>
function change_event()
{
    document.getElementById('my_tag').onclick = function(){new_func();}
}
</script>
<a href="#" id="my_tag" onclick="change_event();" >My test</a>

Note, if you want to bind multiple JavaScript functions on a single event, then you need to define all function in one anonymous function. Failing to do so will make the last function override the ones defined above. For example the above change_event function can be rewritten as :

function change_event()
{
     //note all three functions are defined together.
    document.getElementById('my_tag').onclick = function(){new_func();new_func2();new_func2();}
}

This way you can also associate JavaScript function on the dynamically created DOM elements.

Hope this helps.

Stay Digified !!
Sachin Khosla

Related posts:

1. What is self executing function in Javascript
2. Change a CSS class dynamically using Javascript
3. Add javascript function using css class

Let me show you, how we define a self invoking or self executing function in JavaScript.

<script>
//Example 1
 (function(){
   alert('I am being called');
 })();
 
//Example 2
 (function(x){
   alert(x);
 })('I am passed as an argument');
 
</script>

As you can notice, in the above lines of code, we did not specify name to the function and that is why its called anonymous function. The function is wrapped inside the round brackets and is called as soon as its definition is completed. You can also pass the arguments, if need be, as show in the second example.

Where to use self executing function JavaScript?

It’s nice that you have learnt a new thing in JavaScript, but it is of no fun until you know its real use. So, to be very clear we use these kind of functions when we want variables with limited or local scope. Unclear ? Let’s take a scenario.

You created a nice shiny widget, eg. Twitter updates widget. In this widget, you have used extensive JavaScript functionality to pull new tweets and show some other information. Now this widget code can be embedded on various websites which already have their own JavaScript code. So how can you be sure that the function names which you have used is not being used on end-user’s website ? The variable names which you are using are not in use already ? So to get rid of these uncertainties we use this variant from anonymous functions family.

Hope this helps you to write some nice code. Doubts? I am just a comment away.

Stay Digified !!
Sachin Khosla

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1. Sleep or wait function in javascript
2. Change onclick function for anchor tag using JavaScript
3. Add javascript function using css class

Memory (heap) for the name itself signifies what I am talking about. MySQL, the famous database allows you to store your tables in the Memory or formerly known as Heap storage. The tables which are created in the memory engine are exceptionally faster and can increase the overall performance of your database operations. The reason is that the data is stored in the temporary memory which can be accessed faster in comparison to data stored in the disk drive.

To create a table using the memory engine, use the following SQL syntax.

create table temp (name varchar(30)) Engine = Memory;

Notice the Engine= Memory clause in the above statement, which forces to store the table in the memory instead of using the usual storage system i.e. your disk drive.

When you create a table use memory engine as a backbone, a corresponding file is created in the disk. This file has the same name as of the table and has .frm as extension. As I mentioned earlier, the data is stored in the memory so when the system is restarted all the data gets clear from the memory. However, the table structure exists in the above mentioned disk file. You might be wondering then what is the significance of using this type of storage engine, which cannot safeguard your data permanently. The benefits of using Memory storage is that the tables use hash indexes by default which in result make the data accessibility faster.

So, an ideal scenario to use this engine would be when you need to access data more than the insertion and the data is created temporarily. It makes the queries faster due to the reasons discussed above. You can read more about memory tables at MySQL documentation.

Hope this helps.

Stay Digified !!
Sachin Khosla

Related posts:

1. Delete duplicate entries/rows/values in mysql table in one query
2. Difference between truncate and delete in mysql
3. Insert and update in single mysql query using on duplicate key

A small trick can let you see all the unread messages in your Gmail. These messages may be from inbox or any other filter, you might have added. To get the list of all unread messages do the following.

1. Open your Gmail and type “label:unread” in the search box at the top.
2. Hit enter or click search.
3. You will be able to see all the unread messages in your mailbox.

This is a small workaround or trick, but is really helpful at times and also a pain if you do not know how to do so.

Stay Digified !!
Sachin Khosla

Related posts:

1. Choose which mails to download for offline use in gmail
2. Gmail now adds SMS chat function
3. Now search gmail, google reader and buzz from the chrome browser

• You do not require an API key to use Google Maps.
• Use of “object literal” to set the properties of the map to be loaded.
• More easy to use functions.

You will notice these changes only if you are moving from v2 to v3. If you are a newbie to Google Maps, then you need not to worry about moving your code. So lets get started and create a usual “Hello World” program in Google map API v3.

<html>
  <head>
    <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"> </script>
    <script type="text/javascript">
      function load_map() {
        var latlng = new google.maps.LatLng(28.635308, 77.22496);
        var config = {
          zoom: 11,
          center: latlng,
          mapTypeId: google.maps.MapTypeId.ROADMAP
        };
        var map = new google.maps.Map(document.getElementById("mapC"),config);
      }
 
    </script>
  </head>
  <body onload="load_map()">
    <div id="mapC" style="width: 400px; height: 400px;"></div>
  </body>
</html>

So as you notice above, there are very few lines of code which are capable of rendering this Google Map. I have specified the co-ordinates to New Delhi, India and a zoom level 11 that is why the map by default show that as the center . Let’s understand the code step by step.

• We first included the Google Map API JavaScript file using the Script tag.
• Now we create the center point using the function google.maps.LatLng, as mentioned I have hardcoded the coordinates to New Delhi, India ‘s latitude and longitude.
• Next we define the properties of the map to be loaded using the object literal config inside the function load_map(). You can keep whatever name you want to for this object literal.
• Finally we render the map into the div whose id is mapC , again you can have any ID for the div.

Note:

• Please specify the width and height of the the div in which the map is to be rendered.
• Be sure to load the map after the div has been created, just like in the above code we have called the function load_map() onload, which is fired after the page finished loading.

So this is how you can load a map with some predefined coordinates, but what if you want to show the current location of a user on the map ? For example, if a user visits from New York, NY then you probably want the map’s center point as NY instead of showing New Delhi, India.

Now this is where we are going to use the location detection technique with the help of the user’s browser. Please note that this technique depends upon two factors, they are :

1. Browser should have the ability to detect current location.
2. User should allow the browser to detect the location on the basis of the IP of the user.

I have already posted about How to get current location in a browser? Not many browsers support this but Firefox, Opera support this functionality fully. Read the post to know more about Location awareness.

Advance Google Map to detect current location

So when we change the above code everything should remain the same but we add is location detecting capabilities . We detect the current coordinates of the user via browser and dynamically create the point and center the map to user’s current location instead of some hardcoded or predefined location. Here is the code on how to do it.

<script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script>
<script type="text/javascript">
  var latitude = '';
  var longitude = ''
  function getLocation(pos)
  {
    latitude = pos.coords.latitude;
    longitude = pos.coords.longitude;
    load_map();
  }
  function unknownLocation(){alert('Could not find location');}
 
  function detect_load(){
    navigator.geolocation.getCurrentPosition(getLocation, unknownLocation);
  }
 
  function load_map() {      
    if(latitude == '' || longitude == '')
      return false;
    var latlng = new google.maps.LatLng(latitude, longitude);
    var config = {
      zoom: 11,
      center: latlng,
      mapTypeId: google.maps.MapTypeId.ROADMAP
    };
    var map = new google.maps.Map(document.getElementById("mapC"),config);
  }
</script>
<input type="button" onclick="detect_load();" value="Load map with my current location" />
<br><br>
<div id="mapC" style="width: 400px; height: 400px;"></div>

And here is the Demo map. So click on the button to load the Map with your current location. It will load successfully if you are using Firefox and you will allow it to share your location.

Hope this helps, stay tuned for more advanced map tutorials.

Stay Digified !!
Sachin Khosla

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2. Google web elements, goodies for your website
3. Integrating Google Analytics in Mediawiki

It like wearing the same clothes for many years. But now you can redesign your keyboard and  if not the complete hardware. Using keyscaper you can buy digitally printed keyboard and mouse. The designs are not just stickers but they are digitally printed on the surface of keyboard/mouse.

The cost of these energetic looking hardware varies from 39$ – 59$. So, now add funkiness to your computer and start your work with bright hardware everyday.

Stay Digified !!
Sachin Khosla

Related posts:

1. Sumo Paint – Online Image editor

Thanks for reading Digimantra and I hope you are enjoying it. We are trying to provide you the best from around the web world related to technology, social sites etc. Recently I (Sachin Khosla) have been chosen as the Most Valuable Blogger at DZone.

It surely excites me and implies that people around the web are enjoying the quality posts which we publish via this platform. Thanks again for the overwhelming response.

What does it to be Most Valuable Blogger?

Everyone is asking me, what’s so exciting about being a MVB. So to answer all, let me paste what Dzone has to say about it.

DZone’s Most Valuable Blogger program brings together a group of highly talented bloggers, authors, and technologists actively writing about topics of interest to the developer community. These people are recognized in the industry for their contributions and deep technical knowledge on subjects ranging from software design and architecture to programming on a range of platforms including Java, .NET, Ruby and others.

I have been invited to join this group. But if being in the list interests you then you can visit this MVB about page to know more about it.

Stay Digified !!
Sachin Khosla

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2. Social saturday osscamp,blogger’s meet, book fair

To download the latest version of Yahoo Messenger – http://messenger.yahoo.com/download/

Yahoo Messenger has a very useful feature – Stealth Settings. This feature enables the user to remain invisible to the net-world and chat with selected people. Though cyber-geeks found plenty of loopholes and one can unmask the invisibility layer of users. We understand that these people kept themselves invisible for a reason. With all due respect to their privacy, here are some ways to find out who is jettisoning you from their Cyber-World.

Method 1 – (Direct Check)

• Open http://www.imvisible.info/
• Type the Victim’s ID in the search box (Victim because his privacy rights are being violated)
• Once you are done entering the ID, it will let you know whether the user is offline, online or Invisible.

(Screenshot of Result Page)

Method 2 – (IMvironment Tweak)

• Click IMVironment button→ See all IMVironments→ Interactive Fun→ Doodle.

• If the user is online, then Doodle IMvironemnt will load itself and if the user is offline, then it will not load and keep waiting for the user to come online.

Method 3 – (Voice Chat Crosscheck)

• Double Click on the person whose stealth status you want to check
• Invite the person for Conferencing

· If the talk button appears and turns green then that person is online but if you receive the message ‘Voice chat could not be started ‘ then the person is offline.

Apparently, Method 3 seems to work in some specific systems depending upon if the user has mic/speaker enabled on the system he/she is logged in. Also,there are many Third-party tools which allow you to check the same, but then they may contain Trojan or Viruses.

Stay Digified !!!

Nitish Jha

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2. Check if your friends are invisible on gtalk
3. Hide My Blog Log status from Yahoo Messenger

The recent Facebook-chat tweaks lead to huge hue & cry among the Facebook team. The CEO of Facebook Corporation, Mark Zuckerberg realized the need of security. Facebook and McAfee have partnered to make internet a secure place. The joint collaboration ensures that users stay connected to their favorite networking website without any hassles.

McAfee is providing 6-month subscription to McAfee security package. The package contains McAfee Antivirus, McAfee Firewall, McAfee Anti-Phishing and McAfee Site Advisor. To avail this subscription offer, one has to just click on ‘LIKE’ button provided on the McAfee page on Facebook and fill up the registration form.

The McAfee page on Facebook deals with many aspects of Internet Security. It provides articles on maintaining security on your personal computer. It aims at spreading internet awareness among the people with less technical knowledge. McAfee is killing two birds with one stone in this partnership deal – a) Product promotion is being done and b) People are becoming aware of security issues with the help of McAfee Technical assistance crew (thus providing heavy traffic on their website). On the other hand, Facebook is able to provide a secure zone for its users. The emerging winners from this deal are the people using Facebook as they get 6month subscription for free which ensures hassle-free performance of computer system.

Benefits of McAfee VirusScan Plus –

• Revolutionary McAfee Active Protection technology (NEW) provides instant protection and the highest detection rates against today’s threats
• McAfee SiteAdvisor technology indicates website safety before you click with red, yellow, or green color codes (Red = unsafe, Yellow=Mixed Result /Doubtful and Green = Safe)
• McAfee runs silently in the background
• The ‘Battery Mode’ is meant for laptop users. It does not initiate any power hungry scans until your laptop is plugged in for charging.
• It also removes temporary files and thus enhancing performance of system

Enjoy the new way of accessing fun-filled social networking experience in a secure atmosphere.

Stay Digified !!!

Nitish Jha

Related posts:

1. Change Facebook theme using Camouflage
2. Now login with your facebook usernames
3. Facebook might be using your image as an advertisement

The size of setup file is mere 615.70 kb (hardly takes 2-5 second to install on a decent internet connection). At present, browsers like Mozilla Firefox and Internet Explorer support this plug-in. Other popular browsers like chrome, safari and opera to be added soon. It can be installed from http://plugin.chameleontom.com/

After the application is installed, it tries to change the default search engine to “IAMWIRED.net search” which is not a popular search engine. Apart from this point, the application is without any kind of serious flaws. After the installation is done, a small symbol is introduced in the web-browsers.

Features of ChameleonTom –

• Adds life to your dull Facebook profile
• A Large collection of themes is present; also sorted according to categories.
• Free to use, No Sign Up or Registration required

Applying the Skin on Your Facebook Profile –

(Once the application is successfully installed, add the desired skins by simply clicking on install)

• Click on the ChameleonTom symbol located in the browser
• A Pop-Up Screen would appear (This would show the list of themes available on your local computer. More themes can be downloaded from the website for free)

• Once you are done, the new ‘full of life’ screen is shown below –

The original ‘Blue & White’ standard skin can be selected by performing the same procedure. The skin on your Facebook profile is only visible to those users who have authorized the ChameleonTom application on Facebook. This is one aspect on which the Chameleon Team needs to work on. Overall, it is a wonderful tool.

Camouflage your style like a Chameleon.

Stay Digified !!!

Nitish Jha

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2. Publish updates automatically on facebook fan page via site feeds
3. Now login with your facebook usernames

Long Ago, there was a time when fruits were actually fruits. The present scenario is that Apple and Blackberry are not just fruits; they are powerful communication tool. Following the same trend, many girls are keeping the name of fruits as their status on Facebook which is a popular social networking site. Don’t get confused that the girls are promoting some gizmo product. We feel proud in decoding the Fruit Code. The status may seem mysterious and catchy as well. The general tendency of being curious at peculiar things urges you to find its true meaning. The inside story of this fruity issue starts with an anonymous mail whose origin is still unknown.

The mail goes like this –

hey gurls…

There is something new to the list ! ( AGAIN ! ) :D

This is meant for “GIRLS” only.

Do not pass on to boys :) Let them roam wondering :D

Keep the following names of the fruits in your statuses to which you belong!!

Strawberry- Deeply in love ?

Lichee- Having a strong crush ^^^^

Cherry-Adore someone’s looks n personality :)

Chickoo- Hate your ex :/:/

Mango- Happy being single :D

Apple- Just suffered from a breakup :(

Pineapple- Hate love

I just received n forwarded !

Forward to your co girls and spread the chain :)

Stay digified

Nitish jha

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2. Facebook introduces Twitter like @reply
3. Now login with your facebook usernames

There is no doubt that beauty of car lies in the handling, power and mileage but people outside the car judge it on a totally different parameter. The exteriors of your car say a lot about you. The cost of installing a vinyl sticker to your car body is quite expensive. It has been observed and thought by many that a car requires a lot of money as input for up gradation. A car never provided its owner with money as output. CASHurDRIVE breaks the trend. CASHurDRIVE is an innovative ‘on-vehicle’ advertising concept by Raghu Khanna (Founder and CEO). They are the pioneers in this form of advertising in India. CASHurDRIVE brings the advertisers more nearer to the masses. One does need not to be rocket scientist to understand the working of CASHurDRIVE. The vehicle owners are paid in the form of Monetary funds/Fuel vouchers. Apart from the rewards, what makes this advertising platform a complete win-win is that it is absolutely free to join for vehicle owners!

(How to Avail This Golden Opportunity)

• Open the source website (http://www.cashurdrive.com)
• Signup by filling a online form(http://www.cashurdrive.com/driver_signup.php)
• CASHurDRIVE adds your details in their database, which claims to have a data of about 12.800 cars from North India.
• CASHurDRIVE shortlists as per your requirement and introduce you to prospective clients.
• Once the brand is selected, a vinyl sticker (high-quality) would be placed on car by professionals without causing any damage to the car
• The duration of vinyl sticker on car remains as long as the time the contract is signed between the vehicle owner and advertisers.

This concept has no space for flaws. CASHurDRIVE makes sure that owner/driver fulfills some basic criteria to ensure that BRAND NAME distribution is not in the wrong hands. Some of the norms are as follows –

· Possess a full and valid driving license

· Be able to show proof of vehicle ownership

· Have valid motor insurance for the vehicle

· Not have had any at-fault accidents in the past 2 months.

· Never have received a conviction for Drinking & Driving.

· Sign a contract outlining their responsibilities and conduct during the term of an advertisement.

· Ensure the vehicle intended for Ad Placement is in good condition.
Supply and maintain the vehicle in a clean condition.

· Agree to random spot-checks during the CASHurDRIVE campaign.

There is a decrease in the effective output generated by the printing media. Thus advertisers require a new way to reach out the crowd. CASHurDRIVE provides the advisers the same. Brand Owners can promote their product via CASHurDRIVE by just filling a online form (which hardly takes 2 minutes to fill). It enables the products to reach the people 24 *7. A Wheel-board Ad Campaign will be in front of people eyes.

(Hidden Features) -

• Advertisement is eco-friendly in nature. No harm to the Mother Nature
• Cost Effective
• Effective Results (Product Promotion is always on the go)

CASHurDRIVE generates revenue by bringing the two together. This is a health form of business as we have satisfied customers at both ends.

CASHurDrive is on the HIGHWAY TO SUCCESS. ‘ZET SET GO’ with CASHurDRIVE.

Stay digified !!!

Nitish jha

No related posts.

The Facebook Sensation has traversed all over the world since it came into existence in 2004. Now almost every single person who uses internet in the world has a Facebook account. Facebook Introduced Live chat feature two years ago- A new way to communicate with your Facebook friends in real-time. As we have software named Google talk for using Gmail chat, similarly we can use Facebook’s chat on desktop via Gabtastic, an application based on Mozilla Prism Project. It ties you with your Facebook friends directly from the Desktop and provides much better experience of chatting with your Facebook buddies than the Web based interface.

Gabtastic is a Webkit Based Application which allows you to keep chat sessions open on your desktop outside the regular web browser that you are using.

Requirements to use Gabtastic application are:-

· Adobe Flash Player

· Windows XP, Window Vista or Mac OS X.

· Web Chat Account

After installing the setup you need to sign in with your current Facebook ID. After signing in you will see a window like this given below:

You can choose between Facebook chat client and Gtalk client:

It also controls options such as windows opacity and display level which you can select according to your requirement so that it doesn’t become an irritation by towering your desktop.

Screenshot Given below around 35% of Opacity level:

It also enables up to open multiple chats at a same time using minimal screen and system memory. The main problem in Gabtastic is that chatting alone is not enough and it does not allow any other Facebook applications to run from here. Also you can’t run two applications at the same time, in this case its Facebook chat and Google chat. You need to log out from one application and then login in another, and to make things worse it is exacerbated by the weak message notification system.

But, Developers are making more efforts to integrate it with Yahoo Messenger, Meebo, Twitter, and Trillian Astra to make it more efficient Multi-network Web chat client. It’s pretty easy application to use and more than useful application for all Facebook chat users

Stay Digified !!!

Nitish jha

Related posts:

1. Destroy Twitter : Just another twitter desktop client
2. Facebook might be using your image as an advertisement
3. Tagging friends in Facebook is now available