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  • HTML5 Flash 100% IE8 and Firefox

    - by Jason
    I need to have a flash intro for my website (a requirement from my teacher). I created the intro and embedded it into my page. I takes up the entire screen in both Chrome and Chromium. In IE8, Firefox and Opera the size is incorrect. What am I doing wrong? <!DOCTYPE html> <html> <head> <meta http-equiv="Refresh" content="3; url=template.htm"> <meta charset="UTF-8"> <title>Com Tech Projects | Jason Cook</title> </head> <body style="background: black;"> <embed style="height: 100%; width: 100%;" src="Flash/Introv6.swf"/> </body> </html>

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  • Floats being pushed down in IE8 but not IE7 or Firefox

    - by BReno
    The page in question is here: http://supportdogs.digitalportals.net/PhotoGallery/16-Events You can see in IE8 that the content is being pushed down under the sidebar. If you view it in IE8 compatibility mode, it doesn't happen, nor does it happen in Firefox. If you browse to a different page in IE8 the issue does not persist. The basic layout is <div class="contentContainer"> <div class="left"></div> <div class="right"></div> </div> The css for those three classes is here #contentContainer { background: transparent url('../images/bodyBG.png') repeat-y center top; clear: both; padding: 0px 30px 0px 30px; margin-top: 83px; width: 935px; } #contentContainer .left { float: left; margin-top: 60px; padding-left: 5px; width: 195px; } #contentContainer .right { float: right; margin: -55px 0px 20px 0px; min-height: 620px; width: 700px; } Anyone have any idea what could be causing this?

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  • ASP.NET 2.0 + Firefox/Safari - UI Issues?

    - by Tejaswi Yerukalapudi
    I'm developing on a system that was originally developed five years ago. I don't have access to the complete source code of the system, but it is completely driven by XML and runs on ASP.NET 2.0. This was originally written for IE6, but since Microsoft has officially decided to dump it, we moved to IE7. Some javascript is added on the client side, but nothing that changes the UI has been done. (We had to integrate a credit card reader into the system) This code is accessed primarily on tablet PCs running windows, but I'd like to persuade my company to use the iPad. [The tablet somehow costs around 3k$. I think selling a 3000$ device to a client when you have the iPad for 500$ is ridiculous.] Now, my problem is if we open it in any other browser (Tested it on safari / firefox), the UI is completely messed up with elements completely out of place. Doesn't ASP.NET generate HTML that runs on any browser? My second question is if there are any credit card readers available in the market that integrate with the iPad. I don't really care about the software part as it's taken care by our company, I just need it to read the card details and post it to the server. Thanks, Teja.

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  • Jquery find behavior in firefox 3.5.9

    - by dragoon
    Hi, i have the following piece of HTML code on my page: <tr> <td> <div> <input type="hidden" name="test" value=""> <input autocomplete="off" class="ffb-input watermark"> <div class="ffb"> <div class="content"> </div> </div> </div> </td> </tr> In JavaScript I get the <tr> element using jquery and trying to search for input like this: tr.find('div input:hidden') but nothing is returned. When I'm using find like this: tr.find('div input[type=hidden]') Everything is working fine. What is the reason for such behavor? I observe this only in FireFox 3.5.9, not in 3.6.3, Jquery 1.4.2

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  • Ajax Update Panel Not Displaying Updated Image in IE, Chrome and FireFox

    - by jmease
    I have a parent page with an Ajax Update Panel that contains an image and a button. There is a hyperlink that opens up a child page. When the child page is submitted, there is an onclientclick event that triggers a javascript function that clicks the button in the update panel on the parent page, the button's click event being the trigger for the panel as well as the event that updates the image URL. When I use this on my android tablet, it works perfectly. However, it doesn't work at all on any browser I've used on a PC (Windows XP). The Image URL updates, but the updated image doesn't display without refreshing the entire page. In IE, I can right click on the image and click Show Image and it updates. In Chrome and Firefox, I have to refresh the entire page. Why would an Ajax control only work properly on the Android OS and what could I be doing wrong that would cause the image not to redisplay on my PC without refreshing the page even though the image URL is clearly being updated properly. I suspect a caching issue, but don't know how to correct.

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  • Why my jquery function is not firing on Firefox

    - by Cristian Boariu
    I have some trouble with some jquery method (for some checkboxes I want them to fire on checked/unchecked so I can do something then). This method works perfectly on Chrome and IE but not on latest FF. jQuery(function () { jQuery(':checkbox').change(function () { var counter = jQuery('.count').text(); var thisCheck = jQuery(this); if (thisCheck.is(':checked')) { counter++; //apply green color to the selected row jQuery(this).closest('tr').addClass('checked'); } else { counter--; //remove green color to the selected row jQuery(this).closest('tr').removeClass('checked'); } jQuery('.count').html(counter); //enable export button when there are selected emails to be exported if (counter > 0) { jQuery(".exportButton").removeAttr("disabled", ""); } else { jQuery(".exportButton").attr("disabled", "disabled"); } }); }); Basically it's simply not firing...Even with Debug is not catching the first line (function declare nor other lines too). If I move this javascript(without function declare) inside jQuery(document).ready(function ($) { all works nice on Firefox too... Yes, I do use jQuery.noConflict(); before jQuery(document).ready(function ($) { Do you know why this happens?

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  • La neuvième bêta de Firefox 4 intègrera IndexedDB, un sous-ensemble de l'HTML5 pour le stockage de données côté client

    La neuvième bêta de Firefox intègrera IndexedDB Un sous-ensemble de l'HTML5 pour le stockage de données côté client Mise à jour du 14/11/2011 par Idelways La fondation Mozilla vient de prendre la décision d'intégrer son implémentation du sous-composant de l'HTML5 IndexedDB à la neuvième bêta de Firefox 4 qui sortira dans les jours qui viennent. IndexedDB est une ébauche de standard (encore au stade de brouillon auprès du W3C) qui devrait munir le navigateur d'une bases de données locale pouvant garder d'importantes quantités d'informations sous forme de valeurs simples ou d'objets hiérarchisés. Ave...

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  • Boot-to-Gecko devient Firefox OS, Alcatel et ZTE rejoignent le projet d'OS mobile entièrement open-source de Mozilla

    Boot to Gecko devient Firefox OS Alcatel et ZTE rejoignent le projet d'OS mobile entièrement open-source de Mozilla C'est ce qu'on appelle la stratégie de la marque ombrelle. Si une marque de votre catalogue est reconnue et d'autres moins, rebaptisez les deuxièmes avec le nom de la première. Application concrète : Boot-To-Gecko, l'OS mobile entièrement open-source de la Fondation Mozilla qui s'appuie sur des technologies Web, s'appelle depuis aujourd'hui Firefox OS. Sa première version fonctionnelle a été présentée en février au Mobile World Con...

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  • IE 10 dépasse IE 9 sur le marché des navigateurs, Firefox stabilisé, Chrome gagne timidement du terrain

    IE 10 dépasse IE 9 sur le marché des navigateurs, Firefox stabilisé, Chrome gagne timidement du terrainDans son rapport, l'entreprise analytique web Net Applications révèle qu'Internet Explorer continue de dominer largement le marché des navigateurs. Désormais Internet Explorer représente 56,15 % des navigateurs utilisés, loin devant Firefox et ses 19,15 %, Chrome (17,17 %), Safari (5,5 %) ou Opera (1,6 %). Une bonne nouvelle pour Microsoft dont le navigateur détenait 54 % des parts de marché en juin 2012. Dans le détail, on observe une percée significative d'IE 10 qui a gagné 4,26 % et représente...

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  • Firefox 22 booste ses performances JavaScript et introduit un support complet de WebRTC, le navigateur s'ouvre aux jeux 3D et aux appels vidéos

    Firefox 22 booste ses performances JavaScript avec OdinMonkey et introduit un support de complet de WebRTC le navigateur s'ouvre aux jeux 3D et aux appels vidéos Fidèle à son calendrier de publication des nouvelles versions de Firefox, la fondation Mozilla vient de mettre à la disposition des internautes la version 22 de son navigateur.Peu de changements vont être observés au niveau de l'interface utilisateur, mais cette mouture peut se vanter d'apporter « sous le capot » plusieurs optimisations qui vont améliorer l'expérience de navigation des utilisateurs.La première nouveauté phare est l'intégration d'un module d'optimisation assez particulier au moteur JavaScript.

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  • Firefox Marketplace s'ouvre aux adopteurs précoces, la galerie d'applications Web de Mozilla disponible en version Aurora pour Android

    Premières images du Firefox OS Marketplace Des fuites dévoilent une galerie d'applications à interface minimaliste On le sait, Mozilla prépare le lancement de sa propre plateforme mobile appelée Firefox OS, prévue pour 2013. Nous avons eu un avant-goût de ce système d'exploitation, mais peu d'informations ont filtré sur sa galerie d'applications. Grâce à des images publiées en ligne, nous savons d'ores et déjà à quoi il ressemblerait. [IMG]http://idelways.developpez.com/news/images/firefoxOS-marketplace.png[/IMG]

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  • Firefox Marketplace s'ouvre aux testeurs volontaires, la galerie d'applications Web de Mozilla disponible en version Aurora pour Android

    Premières images du Firefox OS Marketplace Des fuites dévoilent une galerie d'applications à interface minimaliste On le sait, Mozilla prépare le lancement de sa propre plateforme mobile appelée Firefox OS, prévue pour 2013. Nous avons eu un avant-goût de ce système d'exploitation, mais peu d'informations ont filtré sur sa galerie d'applications. Grâce à des images publiées en ligne, nous savons d'ores et déjà à quoi il ressemblerait. [IMG]http://idelways.developpez.com/news/images/firefoxOS-marketplace.png[/IMG]

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  • Microsoft rejette le standard WebGL jugé "dangereux" suite à la découverte de multiples failles critiques sur Firefox

    Microsoft rejette le standard WebGL jugé « dangereux » Suite à la découverte de multiples failles critiques sur Firefox L'avenir du standard WebGL sur Internet Explorer s'annonce très incertain. Microsoft rejette ce standard d'affichage 3D pour le Web, au moins dans sa forme actuelle qu'il juge « dangereuse » dans une dépêche faisant suite à la découverte de plusieurs nouvelles failles critiques sur l'implémentation de Mozilla Firefox. Des failles qui pourraient être présentes sur Google Chrome également. Sur le blog de recherche en sécurité et défense, l'équipe MSRC de Redmond affirme que « le support de WebGL dans les navigateurs ...

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  • Firefox 4 beta 11 est disponible avec la fonction «Do Not Track» pour contrôler le traçage en ligne

    Firefox 4 beta 11 est disponible [SIZE="1"Avec la fonction « Do Not Track » pour contrôler le traçage en ligne [/SIZE] Mise à jour du 09/02/11, par Hinault Romaric La fondation Mozilla vient d'annoncer la disponibilité de la onzième et avant dernière beta du navigateur Firefox 4 (lire ci-avant). Cette nouvelle beta intègre une fonction de confidentialité, baptisée « Do Not Track », pour donner la possibilité aux utilisateurs de mieux contrôler le traçage de leur activité en ligne. Do Not Track est disponible dans les options du navigateur et ne sera pas acti...

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  • Mozilla va marquer les Applets Java comme dangereux dans Firefox, à la grande colère des développeurs Web

    Mozilla va marquer les Applets Java comme dangereux dans Firefox à la grande colère des développeurs WebLe plugin Java, utilisé par de nombreuses applications et sites Web sera marqué comme dangereux à partir de Firefox 24 (le changement n'aurait pas encore été appliqué au navigateur).Java a été en proie à de nombreuses failles de sécurité pendant une longue période. Bien qu'Oracle ait fourni des efforts pour rendre la plateforme plus sûre, chaque mise à jour de sécurité ouvrait la voie à la découverte...

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  • Block Hover Effect - Why doesn't it work correctly in FF3.6?

    - by Brian Ojeda
    Why doesn't following code work correctly in FireFox 3.6? I have tested in IE7, IE8, and Chrome with out any issues. Issue: The first block hover link (the table's 3rd row) doesn't apply the same style/effect as the following below it. Notes: I am trying to create my own table framework. This project is something I am doing to learn more about CSS. Before I started, I thought I knew a lot about CSS. However, to my surprise I was wrong. Who knew? Moving on... As side note, I do not want to take the time to support IE6. So, if you see a problem related IE6, please don't waste your time telling. One another side note, the following style script and HTML listed when this question is strip-down/bare-bone of the complete CSS/HTML. It should be enough to assist me. CSS: /* Main Properties */ .ojtable{display:block;clear:both; margin-left:auto;margin-right:auto; margin-top:0px; width:650px;} .ojtable-row, .ojtable-head {display:block;clear:both;position:relative; margin-left:0px;margin-right:0px;padding:0px;} .col-1, .col-2, .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9, .col-10, .col-11, .col-12, .col-13, .col-1-b1, .col-2-b1, .col-3-b1, .col-4-b1, .col-5-b1, .col-6-b1, .col-7-b1, .col-8-b1, .col-9-b1, .col-10-b1, .col-11-b1, .col-12-b1, .col-13-b1 {display:block;float:left;position:relative; margin-left:0px;margin-right:0px;padding:0px 2px;} /* Border */ .border-b1{border:solid #000000; border-width:0 0 1px 0;} .border-ltr{border:solid #000000; border-width:1px 1px 0 1px;} /* Header */ .ojtable-row{width:100%;} .ojtable-head{width:100%;} /* No Border*/ .col-2{width:96px;} /* Border: 1px */ .col-2-b1{width:95px;} .col-7-b1{width:345px;} /*--- Clear Floated Elements ---*/ /* Credit: http://sonspring.com/journal/clearing-floats */ .clear { clear: both; display: block; overflow: hidden; visibility: hidden; width: 0; height: 0; } /* Credit: http://perishablepress.com/press/2008/02/05/ lessons-learned-concerning-the-clearfix-css-hack/ */ .clearfix:after { visibility: hidden; display: block; font-size: 0; content: " "; clear: both; height: 0; } .clearfix { display:inline-block; } /* start commented backslash hack \*/ * html .clearfix { height: 1%; } .clearfix { display: block; } /* close commented backslash hack */ /*--- Hover Effect for the Tables ---*/ a {text-decoration:none;} * .ojtable a .ojtable-row{width:650px; display:block; text-decoration:none;} * html .ojtable a .ojtable-row {width:650px;}/* Hover Fix for IE */ .ojtable a:hover .ojtable-row{background:#AAAAAA; cursor:pointer;} HTML: <div class="ojtable border-ltr clearfix"> <div class="ojtable-row border-b1 clearfix"> <div class="col-13">Newest Blogs</div> </div> <div class="ojtable-row border-b1 clearfix"> <div class="col-7-b1 border-r1">Name</div> <div class="col-4-b1 border-r1">Creater's Name</div> <div class="col-2">Dated Created</div> </div> <a href="#"><div class="ojtable-row border-b1 clearfix"> <div class="col-7-b1 border-r1">Why jQuery?</div> <div class="col-4-b1 border-r1">Gramcracker</div> <div class="col-2">Mar 11 2010</div> </div></a> <a href="#"><div class="ojtable-row border-b1 clearfix"> <div class="col-7-b1 border-r1">Thank You For Your Help</div> <div class="col-4-b1 border-r1">O'Hater</div> <div class="col-2">Nov 2 2009</div> </div></a> <a href="#"><div class="ojtable-row border-b1 clearfix"> <div class="col-7-b1 border-r1">Click Me! Hahaha!</div> <div class="col-4-b1 border-r1">Brian Ojeda</div> <div class="col-2">Nov 29 2008</div> </div></a> <a href="#"><div class="ojtable-row border-b1 clearfix"> <div class="col-7-b1 border-r1">Moment of Zen</div> <div class="col-4-b1 border-r1">Jedi</div> <div class="col-2">Mar 11 2010</div> </div></a> <a href="#"><div class="ojtable-row border-b1 clearfix"> <div class="col-7-b1 border-r1"></div> <div class="col-4-b1 border-r1">SGT OJ</div> <div class="col-2">Mar 11 2010</div> </div></a> </div> <!-- End of Table --> PS: Thank you for assistant, if you do choose to help.

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  • CSS: Aligning problem with rounded corners in IE 6/7 but ok in IE8/ Firefox etc

    - by mark smith
    Hi there, can anyone help? I have a problem aligning rounded corners in IE6/7. Basically everything seems to work in Firefox / IE8 but in IE6/7 the left / center / and right divs get misaligned. This basically shows exactly what i am refering to. here is the example in IE8 and everything works ok http://es.drop.io/ern0fye/asset/ie8-jpg And here is the problem (this example is running in IE8 with compat mode set to IE7) http://es.drop.io/ern0fye/asset/ie7-jpg I seem to remember there being a bug in IE6/7 with lineheight or similar but i don't recall exactly. I will paste the CSS and HTML below it is very very simple. Basically there is a left div that holds the left corner image and center div which has a background of RED which is the same as the corner images and finally a right div which holds the right corner image. I would appreciate any input anyone has. Thanks in advance. Here is the CSS .vl-top-left { float:left; width:12px; height:12px; } .vl-top-center { float:left; width: 485px; background-color: #F04A23; height:12px; } .vl-top-right { float:left; height:12px; width:12px; } and the HTML is :- <!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> <title></title> <link href="Stylesheet1.css" rel="stylesheet" type="text/css" /> </head> <body> <div class="vl-top-left"> <img src="content/images/esquina_sup_izq.gif" width="12" height="12"> </div> <div class="vl-top-center"> &nbsp; </div> <div class="vl-top-right"> <img src="content/images/esquina_sup_der.gif" width="12" height="12"> </div> </body> </html> EDIT Applied also margin:0 and padding:0 on the body and on each DIV but still the left and right div drops down as per the screenshot

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  • jQuery Ajax (beforeSend and complete) working properly on FireFox but not on IE8 and Chrome

    - by Farhan Zia
    I am using jQuery ajax version 1.4.1 in my MVC application (though the issue I am discussing was same with the old jQuery version 3.2.1) as well, to check during customer registration if the username is already registered. As the user clicks on the "Check Availibility" button, I am showing a busy image in place of the check button (actually hiding the check button and showing the image) while checking the availibility on the server and then displaying a message. It is a Sync call (async: false) and I used beforeSend: and complete: to show and hide the busy image and the check button. This thing is working well on Firefox but in IE 8 and Chrome, neither the busy image appear nor the check button hides rather the check button remained pressed as the whole thing has hanged. The available and not available messages appear correctly though. Below is the code: HTML in a User Control (ascx): (i have replaced the angular braces with square below) [div id="available"]This Username is Available [div id="not_available"]This Username is not available [input id="txtUsername" name="txtUsername" type="text" size="50" /]  [button id="check" name="check" type="button"]Check Availability[/button] [img id="busy" src="/Content/Images/busy.gif" /] On the top of this user control, I am linking an external javascript file that has the following code: $(document).ready(function() { $('img#busy').hide(); $('div#available').hide(); $('div#not_available').hide(); $("button#check").click(function() { var available = checkUsername($("input#txtUsername").val()); if (available == "1") { $("div#available").show(); $("div#not_available").hide(); } else { $("div#available").hide(); $("div#not_available").show(); } }); }); function checkUsername(username) { $.ajax({ type: "POST", url: "/SomeController/SomeAction", data: { "id": username }, timeout: 3000, async: false, beforeSend: function() { $("button#check").hide(); $("img#busy").show(); }, complete: function() { $("button#check").show(); $("img#busy").hide(); }, cache: false, success: function(result) { return result; }, error: function(error) { $("img#busy").hide(); $("button#check").show(); alert("Some problems have occured. Please try again later: " + error); } }); }

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  • Windowsless property is not working in Firefox ONLY

    - by lmenaria
    Hello, I have created a simple silverlight application to display some text at realtime from xml. The text display using HTML DIV tag. I have added plugin property windowless=true, enablehtmlaccess=true,background=transparent. On Silverlight I have added a Button "Continue" at Top & Bottom, which shows some message on that click. Silverlight Plugin resize based in XML contents. My code : MainPage.xaml: MainPage.xaml.cs: Creating HTML DIV on Application Start using : HtmlDocument _document = HtmlPage.Document; HtmlElement iDIV = _document.CreateElement("DIV"); iDIV.SetAttribute("id", "divHTMLViewer"); iDIV.SetStyleAttribute("position", "absolute"); iDIV.SetStyleAttribute("z-index", "1"); iDIV.SetStyleAttribute("display", "INLINE"); iDIV.SetStyleAttribute("top", "100px"); iDIV.SetStyleAttribute("height", "0px"); iDIV.SetStyleAttribute("width", "96%"); iDIV.SetStyleAttribute("left", "15px"); iDIV.SetStyleAttribute("text-align", "justify"); HtmlElement body = _document.GetElementsByTagName("BODY")[0] as HtmlElement; body.RemoveChild(iDIV); body.AppendChild(iDIV); Set the XML text : HtmlElement divHTMLViewer = HtmlPage.Document.GetElementById("divHTMLViewer"); sText = sText.Replace("<", "<").Replace(">", ""); divHTMLViewer.SetStyleAttribute("display", "none"); divHTMLViewer.SetStyleAttribute("width", "96%"); divHTMLViewer.SetStyleAttribute("top", "100px"); divHTMLViewer.SetStyleAttribute("left", "15px"); divHTMLViewer.RemoveStyleAttribute("color"); divHTMLViewer.RemoveStyleAttribute("fontSize"); divHTMLViewer.SetProperty("innerHTML", sText); divHTMLViewer.SetStyleAttribute("display", "INLINE"); setSilverlightControlHeight(UILAYOUT.INSTRUCTIONS); Silverlight Plugin size increase code : isilverlightControlHost.SetStyleAttribute("height", HtmlPage.Window.Eval("document.documentElement.scrollHeight").ToString() + "px"); isilverlightControlHost.SetStyleAttribute("position", "absolute"); All these code is working fine in Internet Explorer, Crome & Safari but "Continue" not visible in FIREFOX ONLY. So is there any issue with this code ? Code Sample :http://lm-bucket-for-forum-post.s3.amazonaws.com/HtMLViewerSilverLight.zip working sample : Just replace ".zip" with "TestPage.html" in above URL. Please let me know how can I solve it ? Thanks in advance, Laxmilal Menaria

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  • javascript and css working on firefox but not working on IE

    - by Nirbhay saini
    Hi I have this code which working on fitrefox but not working on IE missing last charector on IE <!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=utf-8" /> <title>wrapped</title> <script type="text/javascript" language="javascript"> function set_padd(){ var tt = document.getElementById("span_padding").innerHTML; var txt = new Array(); txt = tt.split(" "); var atxt = ''; var f_txt = ''; var wrd_pr_linr = 4; var cnt = 1; for(var i = 0; i < txt.length; i++){ if(txt[i].length > 0){ txt[i] = txt[i].replace(' ',''); if(cnt < wrd_pr_linr){ if(txt[i].length > 0){ atxt += ' '+txt[i].replace(' ',''); cnt++; } }else{ f_txt += '<a class="padd_txt" >'+atxt+'</a><br />'; atxt = ''; cnt = 1; } } } document.getElementById("span_padding").innerHTML = f_txt; } </script> <style type="text/css"> .padd_txt{padding:7px;background:#009;color:#FFF;line-height:26px;font-size:14px;} body{font-family:'Trebuchet MS', Arial, Helvetica, sans-serif; font-size:24px; line-height:1.2em;} span{background-color: #009; width:200px; color: #FFF;" class="blocktext;} </style> </head> <body onload="set_padd();"> <div style="width: 350px;"> <p> <span id="span_padding"> This is what I want to happen where one long string is wrapped and the text has this highlight color behind it. </span> </div> </body> </html> out put on firefox is This is I want to happen where one string is wrapped and the text this highlight behind it. and output on IE This is what want to happen one long string wrapped and the has this highlight missing last two word

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  • localStorage not working in IE9 and Firefox

    - by maha
    I am working with localStorage. My code is perfectly working in Chrome, but not in IE9 and Firefox. Here is the code: document.addEventListener("DOMContentLoaded", restoreContents, false); document.getElementsByTagName("body")[0].onclick=function(){saveContents('myList','contentMain', event, this);}; function amIclicked(e, eleObject) { alert("amIClicked"); e = e || event; var target = e.target || e.srcElement; alert("target = " + target.id); if(target.id=='pageBody' || target.id=='Save') return true; else return false; } function saveContents(e, d, eveObj, eleObject) { //alert("saveContents"); if (amIclicked(eveObj, eleObject)) { var cacheValue = document.getElementById(e).innerHTML; var cacheKey = "key_" + selectedKey; var storage = window.localStorage; //alert ("cacheKey = " + cacheKey + " ,cacheValue = " + cacheValue); if(typeof(Storage)!=="undifined"){ localStorage.setItem("cacheKey","cacheValue"); } //alert ("Saved!!"); var dd = document.getElementById(d); //document.getElementById("contentMain").style.display == "none"; dd.style.display = "none"; } } function restoreContents(e,k) { //alert("test"); if(k.length < 1) { return; } var mySavedList = localStorage["key_" + k]; if (mySavedList != undefined) { document.getElementById(e).innerHTML = mySavedList; } } <a onclick="ShowContent('contentMain','myList','Sample_1'); return true;" href="#" >Sample 1</a><br/><br/> <a onclick="ShowContent('contentMain','myList','Sample_2'); return true;" href="#" >Sample 2</a><br/><br/> <div style="display:none;display:none;position:absolute;border-style: solid;background-color: white;padding: 5px;"id="contentMain"> <ol id="myList" contenteditable="true"> <li>Enter Content here</li> </ol> <!--<input id="editToggleButton" type="button" value="Edit"/>--> </div> When I debugging in Iexplore Iam getting the error as SCRIPT5007: Unable to get value of the property 'length': object is null or undefined sample_1.html, line 157 character 3 Thanks

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  • Scaling-out Your Services by Message Bus based WCF Transport Extension &ndash; Part 1 &ndash; Background

    - by Shaun
    Cloud computing gives us more flexibility on the computing resource, we can provision and deploy an application or service with multiple instances over multiple machines. With the increment of the service instances, how to balance the incoming message and workload would become a new challenge. Currently there are two approaches we can use to pass the incoming messages to the service instances, I would like call them dispatcher mode and pulling mode.   Dispatcher Mode The dispatcher mode introduces a role which takes the responsible to find the best service instance to process the request. The image below describes the sharp of this mode. There are four clients communicate with the service through the underlying transportation. For example, if we are using HTTP the clients might be connecting to the same service URL. On the server side there’s a dispatcher listening on this URL and try to retrieve all messages. When a message came in, the dispatcher will find a proper service instance to process it. There are three mechanism to find the instance: Round-robin: Dispatcher will always send the message to the next instance. For example, if the dispatcher sent the message to instance 2, then the next message will be sent to instance 3, regardless if instance 3 is busy or not at that moment. Random: Dispatcher will find a service instance randomly, and same as the round-robin mode it regardless if the instance is busy or not. Sticky: Dispatcher will send all related messages to the same service instance. This approach always being used if the service methods are state-ful or session-ful. But as you can see, all of these approaches are not really load balanced. The clients will send messages at any time, and each message might take different process duration on the server side. This means in some cases, some of the service instances are very busy while others are almost idle. For example, if we were using round-robin mode, it could be happened that most of the simple task messages were passed to instance 1 while the complex ones were sent to instance 3, even though instance 1 should be idle. This brings some problem in our architecture. The first one is that, the response to the clients might be longer than it should be. As it’s shown in the figure above, message 6 and 9 can be processed by instance 1 or instance 2, but in reality they were dispatched to the busy instance 3 since the dispatcher and round-robin mode. Secondly, if there are many requests came from the clients in a very short period, service instances might be filled by tons of pending tasks and some instances might be crashed. Third, if we are using some cloud platform to host our service instances, for example the Windows Azure, the computing resource is billed by service deployment period instead of the actual CPU usage. This means if any service instance is idle it is wasting our money! Last one, the dispatcher would be the bottleneck of our system since all incoming messages must be routed by the dispatcher. If we are using HTTP or TCP as the transport, the dispatcher would be a network load balance. If we wants more capacity, we have to scale-up, or buy a hardware load balance which is very expensive, as well as scaling-out the service instances. Pulling Mode Pulling mode doesn’t need a dispatcher to route the messages. All service instances are listening to the same transport and try to retrieve the next proper message to process if they are idle. Since there is no dispatcher in pulling mode, it requires some features on the transportation. The transportation must support multiple client connection and server listening. HTTP and TCP doesn’t allow multiple clients are listening on the same address and port, so it cannot be used in pulling mode directly. All messages in the transportation must be FIFO, which means the old message must be received before the new one. Message selection would be a plus on the transportation. This means both service and client can specify some selection criteria and just receive some specified kinds of messages. This feature is not mandatory but would be very useful when implementing the request reply and duplex WCF channel modes. Otherwise we must have a memory dictionary to store the reply messages. I will explain more about this in the following articles. Message bus, or the message queue would be best candidate as the transportation when using the pulling mode. First, it allows multiple application to listen on the same queue, and it’s FIFO. Some of the message bus also support the message selection, such as TIBCO EMS, RabbitMQ. Some others provide in memory dictionary which can store the reply messages, for example the Redis. The principle of pulling mode is to let the service instances self-managed. This means each instance will try to retrieve the next pending incoming message if they finished the current task. This gives us more benefit and can solve the problems we met with in the dispatcher mode. The incoming message will be received to the best instance to process, which means this will be very balanced. And it will not happen that some instances are busy while other are idle, since the idle one will retrieve more tasks to make them busy. Since all instances are try their best to be busy we can use less instances than dispatcher mode, which more cost effective. Since there’s no dispatcher in the system, there is no bottleneck. When we introduced more service instances, in dispatcher mode we have to change something to let the dispatcher know the new instances. But in pulling mode since all service instance are self-managed, there no extra change at all. If there are many incoming messages, since the message bus can queue them in the transportation, service instances would not be crashed. All above are the benefits using the pulling mode, but it will introduce some problem as well. The process tracking and debugging become more difficult. Since the service instances are self-managed, we cannot know which instance will process the message. So we need more information to support debug and track. Real-time response may not be supported. All service instances will process the next message after the current one has done, if we have some real-time request this may not be a good solution. Compare with the Pros and Cons above, the pulling mode would a better solution for the distributed system architecture. Because what we need more is the scalability, cost-effect and the self-management.   WCF and WCF Transport Extensibility Windows Communication Foundation (WCF) is a framework for building service-oriented applications. In the .NET world WCF is the best way to implement the service. In this series I’m going to demonstrate how to implement the pulling mode on top of a message bus by extending the WCF. I don’t want to deep into every related field in WCF but will highlight its transport extensibility. When we implemented an RPC foundation there are many aspects we need to deal with, for example the message encoding, encryption, authentication and message sending and receiving. In WCF, each aspect is represented by a channel. A message will be passed through all necessary channels and finally send to the underlying transportation. And on the other side the message will be received from the transport and though the same channels until the business logic. This mode is called “Channel Stack” in WCF, and the last channel in the channel stack must always be a transport channel, which takes the responsible for sending and receiving the messages. As we are going to implement the WCF over message bus and implement the pulling mode scaling-out solution, we need to create our own transport channel so that the client and service can exchange messages over our bus. Before we deep into the transport channel, let’s have a look on the message exchange patterns that WCF defines. Message exchange pattern (MEP) defines how client and service exchange the messages over the transportation. WCF defines 3 basic MEPs which are datagram, Request-Reply and Duplex. Datagram: Also known as one-way, or fire-forgot mode. The message sent from the client to the service, and no need any reply from the service. The client doesn’t care about the message result at all. Request-Reply: Very common used pattern. The client send the request message to the service and wait until the reply message comes from the service. Duplex: The client sent message to the service, when the service processing the message it can callback to the client. When callback the service would be like a client while the client would be like a service. In WCF, each MEP represent some channels associated. MEP Channels Datagram IInputChannel, IOutputChannel Request-Reply IRequestChannel, IReplyChannel Duplex IDuplexChannel And the channels are created by ChannelListener on the server side, and ChannelFactory on the client side. The ChannelListener and ChannelFactory are created by the TransportBindingElement. The TransportBindingElement is created by the Binding, which can be defined as a new binding or from a custom binding. For more information about the transport channel mode, please refer to the MSDN document. The figure below shows the transport channel objects when using the request-reply MEP. And this is the datagram MEP. And this is the duplex MEP. After investigated the WCF transport architecture, channel mode and MEP, we finally identified what we should do to extend our message bus based transport layer. They are: Binding: (Optional) Defines the channel elements in the channel stack and added our transport binding element at the bottom of the stack. But we can use the build-in CustomBinding as well. TransportBindingElement: Defines which MEP is supported in our transport and create the related ChannelListener and ChannelFactory. This also defines the scheme of the endpoint if using this transport. ChannelListener: Create the server side channel based on the MEP it’s. We can have one ChannelListener to create channels for all supported MEPs, or we can have ChannelListener for each MEP. In this series I will use the second approach. ChannelFactory: Create the client side channel based on the MEP it’s. We can have one ChannelFactory to create channels for all supported MEPs, or we can have ChannelFactory for each MEP. In this series I will use the second approach. Channels: Based on the MEPs we want to support, we need to implement the channels accordingly. For example, if we want our transport support Request-Reply mode we should implement IRequestChannel and IReplyChannel. In this series I will implement all 3 MEPs listed above one by one. Scaffold: In order to make our transport extension works we also need to implement some scaffold stuff. For example we need some classes to send and receive message though out message bus. We also need some codes to read and write the WCF message, etc.. These are not necessary but would be very useful in our example.   Message Bus There is only one thing remained before we can begin to implement our scaling-out support WCF transport, which is the message bus. As I mentioned above, the message bus must have some features to fulfill all the WCF MEPs. In my company we will be using TIBCO EMS, which is an enterprise message bus product. And I have said before we can use any message bus production if it’s satisfied with our requests. Here I would like to introduce an interface to separate the message bus from the WCF. This allows us to implement the bus operations by any kinds bus we are going to use. The interface would be like this. 1: public interface IBus : IDisposable 2: { 3: string SendRequest(string message, bool fromClient, string from, string to = null); 4:  5: void SendReply(string message, bool fromClient, string replyTo); 6:  7: BusMessage Receive(bool fromClient, string replyTo); 8: } There are only three methods for the bus interface. Let me explain one by one. The SendRequest method takes the responsible for sending the request message into the bus. The parameters description are: message: The WCF message content. fromClient: Indicates if this message was came from the client. from: The channel ID that this message was sent from. The channel ID will be generated when any kinds of channel was created, which will be explained in the following articles. to: The channel ID that this message should be received. In Request-Reply and Duplex MEP this is necessary since the reply message must be received by the channel which sent the related request message. The SendReply method takes the responsible for sending the reply message. It’s very similar as the previous one but no “from” parameter. This is because it’s no need to reply a reply message again in any MEPs. The Receive method takes the responsible for waiting for a incoming message, includes the request message and specified reply message. It returned a BusMessage object, which contains some information about the channel information. The code of the BusMessage class is 1: public class BusMessage 2: { 3: public string MessageID { get; private set; } 4: public string From { get; private set; } 5: public string ReplyTo { get; private set; } 6: public string Content { get; private set; } 7:  8: public BusMessage(string messageId, string fromChannelId, string replyToChannelId, string content) 9: { 10: MessageID = messageId; 11: From = fromChannelId; 12: ReplyTo = replyToChannelId; 13: Content = content; 14: } 15: } Now let’s implement a message bus based on the IBus interface. Since I don’t want you to buy and install the TIBCO EMS or any other message bus products, I will implement an in process memory bus. This bus is only for test and sample purpose. It can only be used if the service and client are in the same process. Very straightforward. 1: public class InProcMessageBus : IBus 2: { 3: private readonly ConcurrentDictionary<Guid, InProcMessageEntity> _queue; 4: private readonly object _lock; 5:  6: public InProcMessageBus() 7: { 8: _queue = new ConcurrentDictionary<Guid, InProcMessageEntity>(); 9: _lock = new object(); 10: } 11:  12: public string SendRequest(string message, bool fromClient, string from, string to = null) 13: { 14: var entity = new InProcMessageEntity(message, fromClient, from, to); 15: _queue.TryAdd(entity.ID, entity); 16: return entity.ID.ToString(); 17: } 18:  19: public void SendReply(string message, bool fromClient, string replyTo) 20: { 21: var entity = new InProcMessageEntity(message, fromClient, null, replyTo); 22: _queue.TryAdd(entity.ID, entity); 23: } 24:  25: public BusMessage Receive(bool fromClient, string replyTo) 26: { 27: InProcMessageEntity e = null; 28: while (true) 29: { 30: lock (_lock) 31: { 32: var entity = _queue 33: .Where(kvp => kvp.Value.FromClient == fromClient && (kvp.Value.To == replyTo || string.IsNullOrWhiteSpace(kvp.Value.To))) 34: .FirstOrDefault(); 35: if (entity.Key != Guid.Empty && entity.Value != null) 36: { 37: _queue.TryRemove(entity.Key, out e); 38: } 39: } 40: if (e == null) 41: { 42: Thread.Sleep(100); 43: } 44: else 45: { 46: return new BusMessage(e.ID.ToString(), e.From, e.To, e.Content); 47: } 48: } 49: } 50:  51: public void Dispose() 52: { 53: } 54: } The InProcMessageBus stores the messages in the objects of InProcMessageEntity, which can take some extra information beside the WCF message itself. 1: public class InProcMessageEntity 2: { 3: public Guid ID { get; set; } 4: public string Content { get; set; } 5: public bool FromClient { get; set; } 6: public string From { get; set; } 7: public string To { get; set; } 8:  9: public InProcMessageEntity() 10: : this(string.Empty, false, string.Empty, string.Empty) 11: { 12: } 13:  14: public InProcMessageEntity(string content, bool fromClient, string from, string to) 15: { 16: ID = Guid.NewGuid(); 17: Content = content; 18: FromClient = fromClient; 19: From = from; 20: To = to; 21: } 22: }   Summary OK, now I have all necessary stuff ready. The next step would be implementing our WCF message bus transport extension. In this post I described two scaling-out approaches on the service side especially if we are using the cloud platform: dispatcher mode and pulling mode. And I compared the Pros and Cons of them. Then I introduced the WCF channel stack, channel mode and the transport extension part, and identified what we should do to create our own WCF transport extension, to let our WCF services using pulling mode based on a message bus. And finally I provided some classes that need to be used in the future posts that working against an in process memory message bus, for the demonstration purpose only. In the next post I will begin to implement the transport extension step by step.   Hope this helps, Shaun All documents and related graphics, codes are provided "AS IS" without warranty of any kind. Copyright © Shaun Ziyan Xu. This work is licensed under the Creative Commons License.

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  • ie9/CSS: Flyout menu not working in ie9, but looks great in Firefox/Chrome

    - by Brandon
    Please see this flyout menu: http://www.caseen.com/store.html. It looks amazing in both Firefox and Chrome, but not in IE9! Trying to see what is going on =(. It looks like ie9 is completing ignoring the stylesheet, but in error checking and clicking ie9 direct mode, it shows up however VERY ugly with huge nasty white borders around the links! Please see my code: <div class="flyout"> <ul> <!--START: CATEGORIES--> <!--START: CATEGORY_FORMAT--> <li><a href="view_category.asp?cat=CATID">&nbsp;CATEGORY</a> <!--END: CATEGORY_FORMAT--> <ul><!--START: SUB_CATEGORY_FORMAT--> <li><a href="view_category.asp?cat=CATID">&nbsp;CATEGORY</a></li> <!--END: SUB_CATEGORY_FORMAT--></ul> <!--END: CATEGORIES--> </li> </ul> </div> AND CSS .flyout { width: 130px; height: auto; position:relative; margin: -10 0; padding: 0; z-index:10000; } .flyout ul li a { display:block; text-decoration:none; color: #fff; width: 130px; border: solid; border-color: #000; border-width: 0 0 0 5px; text-align:left; font-size:12px; line-height: 25px; } .flyout ul { padding:0px; list-style-type: none; } .flyout ul li { float:left; margin-right:1px; position:relative; } .flyout ul li ul { display: none; } .flyout ul li:hover a { border: solid; border-color: #fff; border-width: 0 2 0 5px; color: #60dfe5; } .flyout ul li:hover ul { display:block; position:absolute; top:0; left:130px; width:10px; } .flyout ul li:hover ul li a.hide { background:#000; color:#fff; } .flyout ul li:hover ul li:hover a.hide {width:180px;} .flyout ul li:hover ul li ul {display: none;} .flyout ul li:hover ul li a { display:block; background:#000; color:#60dfe5; width:200px; } .flyout ul li:hover ul li a:hover { background:#000; color:#fff; } Thanks, Brandon

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