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Flash Web Development

Calan 240mg pills $126.00 My favorite mechanism for embedding SWFs, calan 240mg pills $126.00 hands down, calan 240mg pills $126.00 is Geoff StearnsSWFObject.  It’s clean, calan 240mg pills $126.00 lightweight, calan 240mg pills $126.00 and easy to use.  Since April 2006, calan 240mg pills $126.00 SWFObject has been my first choice for working around the “click to activate and use this control” warning in Internet Explorer.  Microsoft has decided to remove this activation behavior from Internet Explorer in April 2008 — right around the corner, calan 240mg pills $126.00 as of this writing — but there’s still plenty of reason to keep right on using SWFObject.  Why?  Because it provides an elegant way to detect what version of Flash Player (if any) a website visitor has installed.  If you’re using the On2 video codec, calan 240mg pills $126.00 for example, calan 240mg pills $126.00 it means your site requires Flash Player 8 or higher.  With SWFObject, calan 240mg pills $126.00 you can detect if your visitor has at least 8 and then display the SWF; otherwise, calan 240mg pills $126.00 display a stand-in message (or image), calan 240mg pills $126.00 such as “This site requires Flash Player 8 or higher.”  But what if you want to redirect to another page instead?  Or what if you want to display two different SWFs, calan 240mg pills $126.00 depending on what’s installed?  Read on. 

Getting familiar with SWFObject

Calan 240mg pills $126.00 Geoff’s website explains in detail how to use SWFObject, calan 240mg pills $126.00 and he also wrote an Adobe article on the subject.  In a nutshell, calan 240mg pills $126.00 you download the source file, calan 240mg pills $126.00 which comes in a ZIP archive, calan 240mg pills $126.00 you extract swfobject.js and put it somewhere in your site, calan 240mg pills $126.00 such as among your HTML documents in the root or some subfolder of the root.  Then you reference this external JavaScript file in the <head> element of any page that intends to use it.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
 "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
  <title>Some Document</title>
  <script type="text/javascript" src="swfobject.js"></script>
</head>

Calan 240mg pills $126.00 Naturally, calan 240mg pills $126.00 the src attribute of that <script> element has to path correctly to the JavaScript file.  As shown, calan 240mg pills $126.00 the swfobject.js file would be in the same folder as the HTML file that references it.

Calan 240mg pills $126.00 This allows the HTML document able to create a SWFObject object, calan 240mg pills $126.00 then use that object to embed a SWF.  The SWF will automatically replace the contents of <div> element with an arbitrarily named id attribute, calan 240mg pills $126.00 such as “flashcontent” (though you could just as easily name it “bananaHead”).

<div id="flashcontent">
  This text is replaced by the Flash movie.
</div>

Calan 240mg pills $126.00 This <div> element can hold stand-in text, calan 240mg pills $126.00 as shown, calan 240mg pills $126.00 or an <img> element, calan 240mg pills $126.00 or whatever you like.

<div id="flashcontent">
  <img src="someImage.jpg" alt="Some image" width="320" height="240" />
</div>

Calan 240mg pills $126.00 If the user doesn’t have JavaScript enabled (most users do) or if the user doesn’t have the version of Flash Player you specify — you’ll see this in a moment — the <div> and all its content will be displayed in the browser. Calan 240mg pills $126.00 If the user does have the specified version of Flash Player (and JavaScript enabled), calan 240mg pills $126.00 the browser will display the Flash content.

Calan 240mg pills $126.00 That part is handled like this.

<script type="text/javascript">
  var so = new SWFObject("someMovie.swf", calan 240mg pills $126.00 "mymovie", calan 240mg pills $126.00 "320", calan 240mg pills $126.00 "240", calan 240mg pills $126.00 "9", calan 240mg pills $126.00 "#FFFFFF");
  so.write("flashcontent");
</script>

Calan 240mg pills $126.00 … where so is an arbitrarily named variable that points to the new SWFObject instance.  The first parameter is the name of your SWF; the second parameter is a unique identifier (like the <div> element’s id attribute) that can be reference with JavaScript if desired; the third and fourth are the width and height; the fifth is the minimum required version of Flash Player (here, calan 240mg pills $126.00 Flash Player 9), calan 240mg pills $126.00 and finally, calan 240mg pills $126.00 the background color of the SWF, calan 240mg pills $126.00 which can differ from the actual background color of the FLA.

Calan 240mg pills $126.00 Note that the parameter inside the write() method references the stand-in <div> used earlier by its id.  Badda bing.  It’s that easy.

Using SWFObject for more

Calan 240mg pills $126.00 What if you want to send users to a different page altogether if they don’t have the right version of Flash Player?  What if you have one FLV video encoded in On2 for users with Flash Player 8 or higher, calan 240mg pills $126.00 and another encoded in Sorenson Spark for users with Flash Player 6 or 7?  SWFObject gives you that, calan 240mg pills $126.00 too.  And it’s still really easy.

Calan 240mg pills $126.00 Under the hood, calan 240mg pills $126.00 SWFObject creates a deconcept object (the name of Geoff’s website) as soon as the page loads.  This deconcept object contains a SWFObjectUtil child object that, calan 240mg pills $126.00 in turn, calan 240mg pills $126.00 features a getPlayerVersion() method.  This method returns an object with three useful properties:  major, calan 240mg pills $126.00 minor, calan 240mg pills $126.00 and rev.  You can use those numbers to detect very specific versions of Flash Player.  As of today, calan 240mg pills $126.00 for example, calan 240mg pills $126.00 the current version of Flash Player is 9, calan 240mg pills $126.000, calan 240mg pills $126.00115, calan 240mg pills $126.000.  Of those numbers, calan 240mg pills $126.00 9 is the major version, calan 240mg pills $126.00 the first 0 is the minor, calan 240mg pills $126.00 and 115 is the revision, calan 240mg pills $126.00 which correspond to the properties just mentioned (the last number refers to internal builds, calan 240mg pills $126.00 and is irrelevant to version sniffing).

Calan 240mg pills $126.00 Here’s a quick example that uses the SWFObjectUtil() method to embed a Flash Player 8 or higher SWF for an On2 video and, calan 240mg pills $126.00 for users with Flash Player 6 or 7, calan 240mg pills $126.00 a SWF that only requires either of those versions:

<script type="text/javascript">
  var so;
  var flashVersion = deconcept.SWFObjectUtil.getPlayerVersion();
  if (flashVersion.major >= 8) {
    so = new SWFObject("On2Vid.swf", calan 240mg pills $126.00 "mymovie", calan 240mg pills $126.00 "200", calan 240mg pills $126.00 "200", calan 240mg pills $126.00 "8", calan 240mg pills $126.00 "#FFFFFF");
  } else if (flashVersion.major >= 6) {
    so = new SWFObject("SorensonSqueezeVid.swf", calan 240mg pills $126.00 "mymovie", calan 240mg pills $126.00 "200", calan 240mg pills $126.00 "200", calan 240mg pills $126.00 "6", calan 240mg pills $126.00 "#FFFFFF");
  }
  so.write("flashcontent");
</script>

Calan 240mg pills $126.00 The so variable is declared, calan 240mg pills $126.00 as before, calan 240mg pills $126.00 but this time isn’t set to anything — yet.  Next, calan 240mg pills $126.00 an arbitrarily named variable, calan 240mg pills $126.00 flashVersion, calan 240mg pills $126.00 is set to the return value of the SWFObjectUtil.getPlayerVersion() method.  Inside an if statement, calan 240mg pills $126.00 the major property of this object (referenced by way of the variable as flashVersion.major) is compared against the number 8 to see if it’s greater than or equal to.  If it is, calan 240mg pills $126.00 the so variable is set to a new instance of SWFObject, calan 240mg pills $126.00 as before, calan 240mg pills $126.00 and embeds a SWF that displays an On2 video.  Otherwise, calan 240mg pills $126.00 if flashVersion.major is greater than or equal to 6, calan 240mg pills $126.00 an alternate SWF is embedded.  If the user has, calan 240mg pills $126.00 say, calan 240mg pills $126.00 Flash Player 5 — or none at all, calan 240mg pills $126.00 or JavaScript disabled — the original content of the <div> element is displayed.

Calan 240mg pills $126.00 Let’s say you’ve got some nifty content that requires Flash Player 9, calan 240mg pills $126.000, calan 240mg pills $126.00115, calan 240mg pills $126.000, calan 240mg pills $126.00 because it displays fullscreen video.  If your visitor doesn’t have the right version of Flash Player, calan 240mg pills $126.00 you want to send that visitor to another page on your site that touts the benefits of Flash Player 9 (or whatever … you get the idea).  Here’s one way to do that:

<script type="text/javascript">
  var so;
  var flashVersion = deconcept.SWFObjectUtil.getPlayerVersion();
  if (flashVersion.major >= 9 && flashVersion.rev >= 115) {
    so = new SWFObject("Flash9Content.swf", calan 240mg pills $126.00 "mymovie", calan 240mg pills $126.00 "320", calan 240mg pills $126.00 "240", calan 240mg pills $126.00 "9.0.115", calan 240mg pills $126.00 "#FFFFFF");
  } else {
    window.location = "someOtherPage.html";
  }
  so.write("flashcontent");
</script>

Calan 240mg pills $126.00 Here, calan 240mg pills $126.00 the if statement checks both the major and rev properties.  Make sure to always check for greater than or equal to (>=), calan 240mg pills $126.00 so that next year, calan 240mg pills $126.00 when most of your visitors have Flash Player 10, calan 240mg pills $126.00 everything will still fly without a hitch. Calan 240mg pills $126.00  This time, calan 240mg pills $126.00 the else clause sets the native JavaScript window.location property to another HTML document.  If the user doesn’t have 9, calan 240mg pills $126.000, calan 240mg pills $126.00115, calan 240mg pills $126.000 or higher installed — for example, calan 240mg pills $126.00 has Flash Player 8 installed instead, calan 240mg pills $126.00 or none — the browser will immediately go to someOtherPage.html.  If the user doesn’t have JavaScript enabled, calan 240mg pills $126.00 the original <div> content will be displayed.  If all’s well, calan 240mg pills $126.00 however, calan 240mg pills $126.00 your user will see your SWF.

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