Buenas Diego Puedes hacerlo utilizando JavaScript, javascript cuenta con un objeto llamado navigator y este tiene varias propiedades, entre ellos la propiedad plugins que contiene los plugins instalados por el navegador, lo que puedes hacer es ver si tiene instalado el plugin de Flash, en caso afirmativo haces un document.write() y escribes el codigo HTML correspondiente a la animacion Flash, es decir el object etc etc .... y sino haces una redireccion o das un aviso con un alert() diciendo que necesita el plugin o lo que tu veas conveniente, aqui te dejo un codigo que encontre para la deteccion de Flash via JavaScript:
<code> //init.js: // moock fpi [f.lash p.layer i.nspector] // version: 1.3.5 // written by colin moock // code maintained at: http://www.moock.org/webdesign/flash/detection/moockfpi/ // terms of use posted at: http://www.moock.org/terms/ // ############################################# // These are the user defined globals. // Modify the following variables to customize the inspection behaviour. var requiredVersion = 5; // Version the user needs to view site (max 6, min 2) var useRedirect = false; // Flag indicating whether or not to load a separate // page based on detection results. Set to true to // load a separate page. Set to false to embed the // movie or alternate html directly into this page. // Only set next three vars if useRedirect is true... //var flashPage = "movie.html" // The location of the flash movie page //var noFlashPage = "noflash.html" // Page displayed if the user doesn't have the // // plugin or we can't detect it. //var upgradePage = "upgrade.html" // Page displayed if we detect an old plugin // ############################################# // ************* // Everything below this point is internal until after the BODY tag. // Do not modify! Proceed to the BODY tag for further instructions. // ************* // System globals var flash2Installed = false; // boolean. true if flash 2 is installed var flash3Installed = false; // boolean. true if flash 3 is installed var flash4Installed = false; // boolean. true if flash 4 is installed var flash5Installed = false; // boolean. true if flash 5 is installed var flash6Installed = false; // boolean. true if flash 6 is installed var maxVersion = 6; // highest version we can actually detect var actualVersion = 0; // version the user really has var hasRightVersion = false; // boolean. true if it's safe to embed the flash movie in the page var jsVersion = 1.0; // the version of javascript supported //writevb.js: // Check the browser...we're looking for ie/win var isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false; // true if we're on ie var isWin = (navigator.appVersion.indexOf("Windows") != -1) ? true : false; // true if we're on windows // This is a js1.1 code block, so make note that js1.1 is supported. jsVersion = 1.1; // Write vbscript detection on ie win. IE on Windows doesn't support regular // JavaScript plugins array detection. if(isIE && isWin){ document.write('<SCR' + 'IPT LANGUAGE=VBScript\> \n'); document.write('on error resume next \n'); document.write('flash2Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.2"))) \n'); document.write('flash3Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.3"))) \n'); document.write('flash4Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.4"))) \n'); document.write('flash5Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.5"))) \n'); document.write('flash6Installed = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.6"))) \n'); document.write('</SCR' + 'IPT\> \n'); // break up end tag so it doesn't end our script } //main.js: // Next comes the standard javascript detection that uses the // navigator.plugins array. We pack the detector into a function so it loads // before we run it. function detectFlash() { // If navigator.plugins exists... if (navigator.plugins) { // ...then check for flash 2 or flash 3+. if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]) { // Some version of Flash was found. Time to figure out which. // Set convenient references to flash 2 and the plugin description. var isVersion2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : ""; var flashDescription = navigator.plugins["Shockwave Flash" + isVersion2].description; // DEBUGGING: uncomment next line to see the actual description. // alert("Flash plugin description: " + flashDescription); // A flash plugin-description looks like this: Shockwave Flash 4.0 r5 // We can get the major version by grabbing the character before the period // note that we don't bother with minor version detection. // Do that in your movie with $version or getVersion(). var flashVersion = parseInt(flashDescription.charAt(flashDescription.indexOf(".") - 1)); // We found the version, now set appropriate version flags. Make sure // to use >= on the highest version so we don't prevent future version // users from entering the site. flash2Installed = flashVersion == 2; flash3Installed = flashVersion == 3; flash4Installed = flashVersion == 4; flash5Installed = flashVersion == 5; flash6Installed = flashVersion >= 6; } } // Loop through all versions we're checking, and // set actualVersion to highest detected version. for (var i = 2; i <= maxVersion; i++) { if (eval("flash" + i + "Installed") == true) actualVersion = i; } // If we're on webtv, the version supported is 2 (pre-summer2000, // or 3, post-summer2000). Note that we don't bother sniffing varieties // of webtv. You could if you were sadistic... if(navigator.userAgent.indexOf("WebTV") != -1) actualVersion = 3; // DEBUGGING: uncomment next line to display flash version // alert("version detected: " + actualVersion); // We're finished getting the version on all browsers that support detection. // Time to take the appropriate action. // If the user has a new enough version... if (actualVersion >= requiredVersion) { // ...then we'll redirect them to the flash page, unless we've // been told not to redirect. if (useRedirect) { // Need javascript1.1 to do location.replace if(jsVersion > 1.0) { // It's safe to use replace(). Good...we won't break the back button. window.location.replace(flashPage); } else { // JavaScript version is too old, so use .location to load // the flash page. window.location = flashPage; } } // If we got here, we didn't redirect. So we make a note that we should // write out the object/embed tags later. hasRightVersion = true; } else { // The user doesn't have a new enough version. // If the redirection option is on, load the appropriate alternate page. if (useRedirect) { // Do the same .replace() call only if js1.1+ is available. if(jsVersion > 1.0) { window.location.replace((actualVersion >= 2) ? upgradePage : noFlashPage); } else { window.location = (actualVersion >= 2) ? upgradePage : noFlashPage; } } } } detectFlash(); // call our detector now that it's safely loaded. // swap.js: // In this section we set up the content to be placed dynamically on the page. // Customize movie tags and alternate html content below. function fpi_swap(flash_file,gif_file,width,height,html_content){ if (!useRedirect && (gif_file!='' || html_content!='')) { // if dynamic embedding is turned on if(hasRightVersion) { // if we've detected an acceptable version var oeTags = '<OBJECT CLASSID="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"' + 'WIDTH="'+width+'" HEIGHT="'+height+'"' + 'CODEBASE="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.c ab">' + '<PARAM NAME="MOVIE" VALUE="'+flash_file+'">' + '<PARAM NAME="PLAY" VALUE="true">' + '<PARAM NAME="LOOP" VALUE="false">' + '<PARAM NAME="QUALITY" VALUE="high">' + '<PARAM NAME="wmode" VALUE="opaque">' + '<PARAM NAME="MENU" VALUE="false">' + '<EMBED SRC="'+flash_file+'"' + 'WIDTH="'+width+'" HEIGHT="'+height+'"' + 'PLAY="true"' + 'LOOP="false"' + 'QUALITY="high"' + 'WMODE="opaque"' + 'MENU="false"' + 'TYPE="application/x-shockwave-flash"' + 'PLUGINSPAGE="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod _Version=ShockwaveFlash">' + '</EMBED>' + '</OBJECT>'; document.write(oeTags); // embed the flash movie } else { // flash is too old or we can't detect the plugin // NOTE: height, width are required! var alternateContent = html_content!=''?html_content:'<IMG SRC="'+gif_file+'" HEIGHT="'+height+'" WIDTH="'+width+'">'; document.write(alternateContent); // insert non-flash content } } } </code> Como ves el codigo es algo extenso, pero esta muy bien explicado, pero esta claro que se podria hacer mucho mas corto :-) Un saludo Iv�n Rodriguez Espada _________________________ ALAPLAYA.COM http://www.alaplaya.com [EMAIL PROTECTED] ----- Original Message ----- From: "ms_estilo" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, February 19, 2004 1:03 PM Subject: [ASNativos] [ot] detector flash- contenido alternativo > acabo de usar el programita que te desinstala flash player 7 y he visto que funciona el detector de flash. Lo que pasa es que no me gusta lo que hace. Antes de redireccionar al contenido alternativo se abre la fastidiosa ventana de windows que invita a instalar flash player y todo el rollo ese. > > mi pregunta es: > > alguien sabe c�mo hacer que no aparezca la dichosa ventanita y que redireccione directamente al contenido alternativo sin flash?????? > > > > Saludos > Diego Ponce de Le�n > <!------------------------------- > Lista ASNativos: > subscripciones/desubscripciones > http://www.sidedev.net/asnativos > --------------------------------> > <!------------------------------- Lista ASNativos: subscripciones/desubscripciones http://www.sidedev.net/asnativos -------------------------------->
