Welcome!

Adobe Flex Authors: Matthew Lobas, PR.com Newswire, Shelly Palmer, Kevin Benedict

Related Topics: Adobe Flex

Adobe Flex: Article

Harnessing Adobe's Web Bundle: Dreamweaver For Beginners

Creating Dynamic Layers in DW with Interactive Image Rollovers

Layers are a special kind of HTML elements that can be used as a container to hold other HTML elements and to show them dynamically using JavaScripts. We can stack more than one layer on top of each other. One or more layer can be made visible dynamically, by hiding others. But using Macromedia Dreamweaver you can do all this without even knowing JavaScript or coding.

In this tutorial we are going to use multiple layers stacked over one another, and make it viewable, when you mouseover an image. In this case study I have taken 2 rollover images: Image1, Image 2, and three layers: Layer1, Layer2 and Layer3.

When we mouse over on the Image1, the second layer will appear while Layer1 and Layer 3 will be hidden along with its content. Likewise for the Image 3, Layer1 and 2 will be hidden and only Layer3 will appear with its content. When we mouse out from the images, Layer 1 will come up again.

To achieve this follow the steps and enjoy!

1.  Creating rollover Images
First as I said let us create 2 Images. We can use Macromedia Fireworks to create the images. In our case I have designed 4 buttons; 2 for the up state and 2 for the down state.

After designing the buttons, open a new page in Dreamweaver and create a 2X1 table. Now Insert the images using, Insert>Interactive Images>Rollover Image. Browse and select the first one for the up state and the second one for the down state. ( I am assuming you have put the images in the proper folder.)

Now do the same for the next image, so that both the images are in the first column of the table as shown in this example.

2.  Placing Layers
Open Insert>Layer and place the Layer1. Move the layer into column2 of the table. Now you can write the content inside the Layer. Select the layer in the Properties Inspector and select Overflow as 'visible'. This makes this first layer the default layer and makes it visible while the page is being loaded.

Note down the position of the Layer (566px and 163px). Insert the second and third layers on the same position, so that they will sit over the first layer.

Now insert the text on those layers. (Note: Due to the overlapping of layers the text may not be clear. So, you can place the layers somewhere else, write down the text and then change the position of the layers to sit on the same position as the first layer.)

3.  Changing the Layer Properties
Select Window>Layers. You will get the Layer Inspector, with all the three layer details. Select Layer2 and Layer3 and if the eye is open click on it to close it for both of them. In the properties Inspector you can see the OverFlow is selected as hidden for Layer2 and Layer3. This enables Layer2 and 3 to be hidden while the page is loaded.

4.  Adding Behaviors
Now select the Image1 where we are going to add the dynamic Layer effects. Then Open Window > Behavior. You can see the Events and actions created by Dreamweaver for the Rollover Images which we did in step 1.

Click on the button and select "Show-hide Layers". You will get this box to 'Show or Hide" the Layers.

Now do the following:
a. Select Layer1 than click on 'Hide'
b. Select Layer2 and click on 'Show' then,
c. Select Layer3 and click on 'Hide'.

This action will make Layer1 and 3 disappear and show Layer2 whenever you mouseover Image1.

You can also see the new JavaScript events created by Dreamweaver in the Behaviors Inspector. Here the new onMouseOver and onMouseOut with Show-hide Layers as actions.

Note here that you can use other events also as you like. For example instead of onMouseOver you can use onClick. To do this you need to click on the tiny black, inverted arrow next to the event. Use this to select other events, ie OnClick, Down etc.,.

At the foot of the list there is a category which allows you to choose which browsers to support, make sure a check is next to 4 and higher browsers. (Only after choosing the browser 4 or higher you will be able to see all the Events in a list)

Follow step 4 by selecting Image2. Then,
a. Select Layer1 than click on 'Hide';
b. Select Layer2 and click on 'Hide' then,
c. Select Layer3 and click on 'Show'.

This action will make the Layer1 and Layer2 disappear and show Layer2 while you move your mouse over Image1.

5.  Bringing Default Layer Again
Now as a final step, you need to bring back Layer1 when you move your mouse out of the Image (or when you mouse away from the images to somewhere on that page). Select Image1 and click on the button and select "Show-hide Layers". You will get a box to 'Show or Hide" the Layers.

Now do the following...
a. Select Layer1 than click on 'Show'
b. Select Layer2 and click on 'Hide' then,
c. Select Layer3 and click on 'Hide'.

This action will make Layer2 and Layer3 disappear and show Layer1 while you move your mouse out of the Image1. Also do not forget to change the Events to onMouseOut.

Repeat step 5 with Image2 also. Now you should get the Behavior Inspector like this Image, showing all the Events for both Image1 & Image2.

More Stories By Benny Alexander

Benny Alexander is lead developer with Macronimous.com, an offshore web design company focusing on quality Web and PDA application development services at low costs and serving the needs of small to medium businesses.

Comments (0)

Share your thoughts on this story.

Add your comment
You must be signed in to add a comment. Sign-in | Register

In accordance with our Comment Policy, we encourage comments that are on topic, relevant and to-the-point. We will remove comments that include profanity, personal attacks, racial slurs, threats of violence, or other inappropriate material that violates our Terms and Conditions, and will block users who make repeated violations. We ask all readers to expect diversity of opinion and to treat one another with dignity and respect.


@ThingsExpo Stories
The Jevons Paradox suggests that when technological advances increase efficiency of a resource, it results in an overall increase in consumption. Writing on the increased use of coal as a result of technological improvements, 19th-century economist William Stanley Jevons found that these improvements led to the development of new ways to utilize coal. In his session at 19th Cloud Expo, Mark Thiele, Chief Strategy Officer for Apcera, will compare the Jevons Paradox to modern-day enterprise IT, e...
There are several IoTs: the Industrial Internet, Consumer Wearables, Wearables and Healthcare, Supply Chains, and the movement toward Smart Grids, Cities, Regions, and Nations. There are competing communications standards every step of the way, a bewildering array of sensors and devices, and an entire world of competing data analytics platforms. To some this appears to be chaos. In this power panel at @ThingsExpo, moderated by Conference Chair Roger Strukhoff, Bradley Holt, Developer Advocate a...
In his general session at 18th Cloud Expo, Lee Atchison, Principal Cloud Architect and Advocate at New Relic, discussed cloud as a ‘better data center’ and how it adds new capacity (faster) and improves application availability (redundancy). The cloud is a ‘Dynamic Tool for Dynamic Apps’ and resource allocation is an integral part of your application architecture, so use only the resources you need and allocate /de-allocate resources on the fly.
SYS-CON Events announced today that Bsquare has been named “Silver Sponsor” of SYS-CON's @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. For more than two decades, Bsquare has helped its customers extract business value from a broad array of physical assets by making them intelligent, connecting them, and using the data they generate to optimize business processes.
There is growing need for data-driven applications and the need for digital platforms to build these apps. In his session at 19th Cloud Expo, Muddu Sudhakar, VP and GM of Security & IoT at Splunk, will cover different PaaS solutions and Big Data platforms that are available to build applications. In addition, AI and machine learning are creating new requirements that developers need in the building of next-gen apps. The next-generation digital platforms have some of the past platform needs a...
SYS-CON Events announced today that ReadyTalk, a leading provider of online conferencing and webinar services, has been named Vendor Presentation Sponsor at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. ReadyTalk delivers audio and web conferencing services that inspire collaboration and enable the Future of Work for today’s increasingly digital and mobile workforce. By combining intuitive, innovative tec...
Fact is, enterprises have significant legacy voice infrastructure that’s costly to replace with pure IP solutions. How can we bring this analog infrastructure into our shiny new cloud applications? There are proven methods to bind both legacy voice applications and traditional PSTN audio into cloud-based applications and services at a carrier scale. Some of the most successful implementations leverage WebRTC, WebSockets, SIP and other open source technologies. In his session at @ThingsExpo, Da...
Cognitive Computing is becoming the foundation for a new generation of solutions that have the potential to transform business. Unlike traditional approaches to building solutions, a cognitive computing approach allows the data to help determine the way applications are designed. This contrasts with conventional software development that begins with defining logic based on the current way a business operates. In her session at 18th Cloud Expo, Judith S. Hurwitz, President and CEO of Hurwitz & ...
Almost two-thirds of companies either have or soon will have IoT as the backbone of their business in 2016. However, IoT is far more complex than most firms expected. How can you not get trapped in the pitfalls? In his session at @ThingsExpo, Tony Shan, a renowned visionary and thought leader, will introduce a holistic method of IoTification, which is the process of IoTifying the existing technology and business models to adopt and leverage IoT. He will drill down to the components in this fra...
The Internet of Things can drive efficiency for airlines and airports. In their session at @ThingsExpo, Shyam Varan Nath, Principal Architect with GE, and Sudip Majumder, senior director of development at Oracle, will discuss the technical details of the connected airline baggage and related social media solutions. These IoT applications will enhance travelers' journey experience and drive efficiency for the airlines and the airports. The session will include a working demo and a technical d...
I'm a lonely sensor. I spend all day telling the world how I'm feeling, but none of the other sensors seem to care. I want to be connected. I want to build relationships with other sensors to be more useful for my human. I want my human to understand that when my friends next door are too hot for a while, I'll soon be flaming. And when all my friends go outside without me, I may be left behind. Don't just log my data; use the relationship graph. In his session at @ThingsExpo, Ryan Boyd, Engi...
SYS-CON Events announced today that Pulzze Systems will exhibit at the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Pulzze Systems, Inc. provides infrastructure products for the Internet of Things to enable any connected device and system to carry out matched operations without programming. For more information, visit http://www.pulzzesystems.com.
SYS-CON Events announced today that Numerex Corp, a leading provider of managed enterprise solutions enabling the Internet of Things (IoT), will exhibit at the 19th International Cloud Expo | @ThingsExpo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Numerex Corp. (NASDAQ:NMRX) is a leading provider of managed enterprise solutions enabling the Internet of Things (IoT). The Company's solutions produce new revenue streams or create operating...
If you’re responsible for an application that depends on the data or functionality of various IoT endpoints – either sensors or devices – your brand reputation depends on the security, reliability, and compliance of its many integrated parts. If your application fails to deliver the expected business results, your customers and partners won't care if that failure stems from the code you developed or from a component that you integrated. What can you do to ensure that the endpoints work as expect...
WebRTC adoption has generated a wave of creative uses of communications and collaboration through websites, sales apps, customer care and business applications. As WebRTC has become more mainstream it has evolved to use cases beyond the original peer-to-peer case, which has led to a repeating requirement for interoperability with existing infrastructures. In his session at @ThingsExpo, Graham Holt, Executive Vice President of Daitan Group, will cover implementation examples that have enabled ea...
The Transparent Cloud-computing Consortium (abbreviation: T-Cloud Consortium) will conduct research activities into changes in the computing model as a result of collaboration between "device" and "cloud" and the creation of new value and markets through organic data processing High speed and high quality networks, and dramatic improvements in computer processing capabilities, have greatly changed the nature of applications and made the storing and processing of data on the network commonplace.
Major trends and emerging technologies – from virtual reality and IoT, to Big Data and algorithms – are helping organizations innovate in the digital era. However, to create real business value, IT must think beyond the ‘what’ of digital transformation to the ‘how’ to harness emerging trends, innovation and disruption. Architecture is the key that underpins and ties all these efforts together. In the digital age, it’s important to invest in architecture, extend the enterprise footprint to the cl...
Fifty billion connected devices and still no winning protocols standards. HTTP, WebSockets, MQTT, and CoAP seem to be leading in the IoT protocol race at the moment but many more protocols are getting introduced on a regular basis. Each protocol has its pros and cons depending on the nature of the communications. Does there really need to be only one protocol to rule them all? Of course not. In his session at @ThingsExpo, Chris Matthieu, co-founder and CTO of Octoblu, walk you through how Oct...
In his keynote at 18th Cloud Expo, Andrew Keys, Co-Founder of ConsenSys Enterprise, provided an overview of the evolution of the Internet and the Database and the future of their combination – the Blockchain. Andrew Keys is Co-Founder of ConsenSys Enterprise. He comes to ConsenSys Enterprise with capital markets, technology and entrepreneurial experience. Previously, he worked for UBS investment bank in equities analysis. Later, he was responsible for the creation and distribution of life sett...
Vidyo, Inc., has joined the Alliance for Open Media. The Alliance for Open Media is a non-profit organization working to define and develop media technologies that address the need for an open standard for video compression and delivery over the web. As a member of the Alliance, Vidyo will collaborate with industry leaders in pursuit of an open and royalty-free AOMedia Video codec, AV1. Vidyo’s contributions to the organization will bring to bear its long history of expertise in codec technolo...