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pqb

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Posts posted by pqb

  1. There definately is a way in the middle. I would argue that a browser IS security software. Most modern browsers have plenty of features to alert you when they detect a malicious website, so a lack of security is no excuse for a browser. Look at what Microsoft did with service pack 2 on XP, or Windows Server 2003. The default settings for IE pretty much disable everything in the browser that is useful (active scripting, plugins, etc). They have to disable everything by default because it is so insecure to begin with. Opera and Firefox use Flash, Javascript, etc and don't have anywhere near the number of vulnerabilities that IE does. But I'm not just saying that, I can back that up with statistics:This page is very telling: Secunia advisories for IE6.x from 2003-2006:http://secunia.com/product/11/?task=statisticsIt's a little confusing though, the box on the right claims there have been 105 advisories, with 18 of them currently unpatched, but the graphs cover 89 advisories. But look at the numbers:Only 2/3 of vulnerabilities have been vendor patched. The rest are either unpatched, or a workaround (for example, to "solve" a Javascript vulnerability, Microsoft's solution was to disable Javascript).Nearly half (46%) of the vulnerabilities are either extremely or highly critical. 33% are extremely critical.99% of the vulnerabilities are remote exploits.The two highest levels in the "impact" graph are System Accces (34%) and Security Bypass (16%).That type of data is hard to argue with. It's pretty obvious that IE has major problems. Compare that against Firefox 1.x:http://secunia.com/product/4227/?task=statistics35 advisories, 86% patched, 3% extremely critical (31% highly critical), 20% system access. Compare that with Opera 9.x: 0 advisories. Or Opera 8.x: 15 advisories, all of them patched.http://secunia.com/product/4932/?task=statisticsSafari 1.x clocks in with 15 advisories, and Safari 2.x with 5 advisories.The bottom line, and my point, is there's no reason for IE to be so insecure when everything else is much more secure. One simply cannot argue that the responsibility of security does not rest with the browser.This is why I chose option #1 on the poll (see that? I'm on topic!)
    Thank you for this interesting link, enabling comnparison of browsers. Safari seems quite vulnerable, although only from 5 advisories. If you're using Mac OS X Camino is a good bet with none, as is Opera. Both are very pleasant browsers to use. Firefox seems to work for most sites, as does Safari. I can usually get into any site with at least one of these.Another interesting comparison would be how various OSs stand up to malicious attack. Mac OS X is reputedly quite secure. The more open source something is the more likely it is to be sound, as more people have a chance to check it out and make sensble changes. By that argument Linux must be even more secure. Any comments?It always occurs to me, and it has arisen in this discussion, that people often use a system because it is there, and maybe do not even have the opportunity to compare it with another. Time and workplace are two main constraints on our choice of computer. Also these points only matter a lot if you spend a lot of time using the computer.
  2. You might be able to change the percent, im not sure, try it. No I am saying that you can use either width or height, because it will keep the aspect ratio. Only unless you want to change the aspect ratio, do you use both. And no, the size parameter can go in any order, and wherever, as long as they are insde the < >.
    Right. I've removed the size parameters, and the page still looks OK. Still a mystery why the page did not display the photos when I used height. Anyway, problem solved for these pages and validation.Thanks.
  3. When changing the size of an image use this code:<img height="pixels" width="pixels" src="mypic.gif">You can use either height or width, because it keeps the same aspect ratio, but you can use both if you like.
    Do the size parameters have to go in front of the image source tag? Does it have to be in pixels? % is much easier. Counting pixels is not my idea of fun!Presumably if you wish to change the aspect ratio, then both height and width can be used to do this?
  4. I validated pages with photos, displayed in tables. Each photo is set to display at a certain size, with width and height specified. The height was controlled by the <size> tag (forgotten where I got that from) and it worked, but the w3c validator said it was wrong. i substituted <height>, but then the pictures did not show.What should it be?eg of code, which displays rows of three photos, with popups of larger versions if user clicks on them:<table><tr> <td align="center"><a href="popupbasic.html" onClick="return popup('Cards/Greetings_lg/HPIM2380.jpg')"><img src="Cards/Greetings_sm/HPIM2380.jpg" size="100%" width="100%" alt="picture of card"></a></td><td align="center"><a href="popupbasic.html" onClick="return popup('Cards/Greetings_lg/HPIM2381.jpg')"><img src="Cards/Greetings_sm/HPIM2381.jpg" size="75%" width="75%" alt="picture of card"></a></td><td align="center"><a href="popupbasic.html" onClick="return popup('Cards/Greetings_lg/HPIM2382.jpg')"><img src="Cards/Greetings_sm/HPIM2382.jpg" size="75%" width="75%" alt="picture of card"></a></td></tr><tr><td><a href="#topofpage">Go to top</a></td></tr>

  5. This code is fine, he is just nesting tables. He closes every table he opens, he just left out some tr tags. I put the added tags in bold:This fixed it, and it validated. I was forgetting that of course the nested table is in a parent table's cell.Thanks very much; I appreciate your help.
  6. pqb, could you post a picture of what exactly you want? Then we can look what your code should be.
    Yes, thanks for your help. What mystified me was that I knew the table tags were not quite right, but if I removed one that I thought shouldn't be there the page was formatted differently, and not how I wanted it at all.I have taken two screenshots to show the entire page.http://www.annablackburn.com/pqb1.tiffhttp://www.annablackburn.com/pqb2.tiffMany thanks.
  7. Just some tips on coding HTML, when opening a code you always need to close it in the right order, for example:Thanks very much. Yes, I couldn't understand why it looked OK in the browser, when it clearly wasn't logical, and the validator only picked up on <tr> tags. Perhaps just a degree of tolerance by the browsers. (I had missed the extra <table> tag when I checked through.)
  8. The following code generated 2 errors when validated. I don't understand the errors, nor do I understand why the code works, when there is an extra </table> tag without another <table> to open the next section. It displays correctly in several different browsers I have tested it with. Most grateful for any ideas. URL of page is: http://www.annablackburn.comThe errors were:Error Line 36 column 3: start tag for "TR" omitted, but its declaration does not permit this.<td><img src="Pictures/cover.jpg" width="250" height="400" alt="cover picture"><?Error Line 55 column 3: start tag for "TR" omitted, but its declaration does not permit this.<td><img src="Pictures/HPIM2465.jpg" width="350" height="250" alt="example card"?My code:<table cellspacing="5" cellpadding="20" border="0"><tr><td width="55%"> <h1>Anna Blackburn</h1><p> <h2>Bespoke Dressmaking & Tailoring</h2><p></td><td rowspan="4" width="45%"> <table cellspacing="5" cellpadding="20" border="12"><td><img src="Pictures/cover.jpg" width="250" height="400" alt="cover picture"></td></tr></table><tr><td width="35%" rowspan="5"><h3>Wedding & Evening Dresses a speciality</h3><p>Other clothes also made to measure, either from client's own scheme, or after consultation with our design expert.</p></td></tr></table><table cellspacing="5" cellpadding="20" border="0"><tr><td width="55%"><h2>Handmade Cards for Various Occasions</h2><p></td><td rowspan="4" width="45%"> <table cellspacing="5" cellpadding="20" border="12"><td><img src="Pictures/HPIM2465.jpg" width="350" height="250" alt="example card"></td></table></td></tr><tr><td width="35%" rowspan="5"><p>Click on <a href="#topofpage">menu</a> to view different categories.</p></td></tr></table>

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