Warning: Unknown([PATH HERE]): failed to open stream: No such file or directory in Unknown on line 0

Some other Fatal error came up but I forgot to copy it, sorry.

The error message is unhelpful but it was pretty easy to fix. I just deleted the .htaccess file from the root and tested. It worked! After restoring a backup of the .htaccess file everything worked. Hooray!

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This can happen when you try doing a HTTP redirect or send HTTP 404, as it can happen whenever you try to send headers once they’ve already been sent. When a user sees this, they are basically left high and dry, often on a blank page. The solution is simple:

Detect if Headers Have Already Been Sent

Whenever you call header(); , call headers_sent(); first!

Example:

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    if (!headers_sent()) {
        header('Location: ' . (!$absolute ? HOME_URL : "") . $page);
        die();
    } else {
        echo "\n\n<p>Couldn't redirect to " . htmlentities((!$absolute ? HOME_URL : "") . $page) . ", headers already sent.</p>\n\n";
        //do something here...
    }

Of course you should probably do thing useful

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The HTML

After some searching around, the most appealing solution I found was the Suckerfish solution. Using the Suckerfish solution, a dropdown menu can be marked up using semantic HTML – more specifically – lists. Here’s an example:

<ul id="nav">
	<li><a href="#">Menu 1</a>
		<ul>
			<li><a href="#">Submenu 1</a></li>
			<li><a href="#">Submenu 2</a></li>
			<li><a href="#">Submenu 3</a></li>
		</ul>
	</li>

	<li><a href="#">Menu 2</a>
		<ul>
			<li><a href="#">Submenu 1</a></li>
			<li><a href="#">Submenu 2</a></li>
			<li><a href="#">Submenu 3</a></li>
		</ul>
	</li>
	<li><a href="#">Menu 3</a></li>

</ul>

CSS Part 1

As you can see, this is some very clean HTML or XHTML code which is great for search engines, accessibility and validation – not to mention code maintenance. Now, we just need to apply some CSS styles to the elements to turn this list into a dropdown menu or popup menu.

Using the Suckerfish solution, these are the styles to add:

#nav, #nav ul {
	padding: 0;
	margin: 0;
	list-style: none;
}

#nav a {
	display: block;
	width: 10em;
}

#nav li {
	float: left;
	width: 10em;
}

CSS Part 2

That CSS gets the root menu’s visual structure up, now we need to organise the actual dropdown menus. We need to hide the drop down lists until the user hovers over the root of that particular drop down list. To do this, it seems the most accessible multi-platform solution is to move it out of sight using “left:-999em” rather than “display:none” which is known to be inaccessible. On the hover event, we move it back beneath the root using “left:auto” because “left:0″ causes a problem in Opera.

Here’s the CSS for showing and hiding the dropdown lists:

#nav li ul {
	position: absolute;
	width: 10em;
	left: -999em;
}

#nav li:hover ul {
	left: auto;
}

The Special :hover Case of Internet Explorer

Done, you now have a perfectly functioning, semantic, valid, accessible menu – right? Not quite – this still doesn’t work in Internet Explorer because it doesn’t happen to have full support for the “:hover” pseudo class but that’s Ok. Because those geniuses at HTMLDog created Suckerfish - a very small Javascript script that will solve this problem in no time, add this to your head section:

sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");

	for (var i=0; i<sfEls.length; i++) {

		sfEls[i].onmouseover=function() {

			this.className+=" sfhover";
		}

		sfEls[i].onmouseout=function() {

			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);

What Suckerfish does is goes through all LI elements in #nav and adds the class “sfHover” onMouseOver (when the user hovers over the list item) and removes the class onMouseOut. Or in other words, it solves our problem.

There’s only one thing left to do, and that’s change a bit of the CSS that shows the dropdown menus to include the new “sfHover”:

Change:

#nav li:hover ul {
	left: auto;
}

To:

#nav li:hover ul, #nav li.sfhover ul {
	left: auto;
}

And that’s it! Here’s a working demo of the valid, accessible HTML and CSS drop down menu.

Solution for Overlapping Elements or Hidden Menu

Sometimes, there’s STILL more trouble. When implementing this menu for Lonsdale Views, I came across a problem – the menus were being obstructed or hidden behind other elements! So I went ahead and used z-index to let the browser know that the menu needed to be on top. Huzzah, it works! Oh, not in Internet Explorer – what a surprise. I spent quite some time searching the internet for a solution…

Eventually I read that Internet Explorer passes z-index from parent to child, so even if you give a “4th generation” element a z-index of 1000, the z-index can’t be greater than the lowest z-order of any parent elements!

The solution to your menus being obstructed or hidden behind images, hidden behind pictures, hidden behind text, hidden behind flash, hidden behind everything:

Give each parent element of the #nav element isn’t common with the obstructing element a HIGH z-index (let’s say, 100) and give the element containing the elements obstructing your menu a LOWER z-index (let’s say 0)

For example, if this was part of your page:

<div id="container">
	<div id="topbar">
		<ul id="nav">
			... the menu code is here ...
		</ul>
	</div>

	<div id="content">
		... the element(s) that obstruct or are hiding your menu ...
	</div>
</div>

You could use this CSS to remedy your problems:

 #topbar, #nav {
	z-index:100;
}

#content {
	z-index:0;
}

Hope this has saved you some time and taught you something. If you really appreciate it, leave a comment and even go and say thanks to the crew at HTMLDog - this is all because of them!

Flash Objects Obstructing or Overlapping Menu

Sometimes, even when all of the CSS is correct, your menus might be overlapped by flash objects. For example, when you hover over, your CSS menu is hidden behind a flash object. The solution to this is actually somewhat simple and cross-browser. All that you need to do is add the transparency parameter to your embed / object code, like so:

<object type="application/x-shockwave-flash" width="100" height="100">
	<param name="wmode" value="transparent" />
	<param name="movie" value="flash.swf" />
	<embed wmode="transparent" src="flash.swf" width="100" height="100" />
</object>

Notice how “<param name=”wmode” value=”transparent” /> has been added? Also, don’t forget to add the ‘wmode=”transparent’” to the EMBED tag - that is imporant for non-Internet Explorer browsers. Now obviously, you need to change the “src” attributes and the movie value to whatever the URI of your flash file is.

Happy coding!

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Sometimes a website that you really need to access is blocked from your workplace or school. When things get desperate, there are ways to get around the IT policies, one way is to use a Web Proxy. Web Proxies are websites that act as a messenger – you ask for any website and the Web Proxy will fetch it for you.

For your convenience, here is a sizable list of Web Proxies. Some of the sites in this Web Proxy List might be blocked by an IT Admin, so keep trying until you succeed.

• vTunnel
• XanProxy
• ieProxy
• TechTakeover
• SpySurfing
• MyFreeProxy
• WorldWideProxy
• Proxytastic
• NoMoreLimits
• ProxiFree
• BrowseAtWork
• NetSack
• aFreeProxy
• CGI-Proxy
• CoveredTracks
• EasyProxy
• Privatizer
• Secure-Tunnel
• SpiderProxy
• TheStrongestLinks
• Unipeak
• BetaProxy
• Proxy7
• WebWarper
• ChronicPulse
• ProxyKing
• W3Privacy
• FreeProxy
• GoProxing
• GreenRabbit
• Hujiko
• Poxy
• HideMyAss
• Proxify
• ProjectBypass
• ProxyMouse
• LetsProxy
• The-Cloak

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• Download MP3s from YouTube
• Put YouTube music on your iPod, or put YouTube music on MP3 Players, etc.
• Burn YouTube Music to a CD
• Use YouTube Music as Ringtones
• And much more…

To Download MP3 from YouTube, just visit their website – Download Video & MP3 from YouTube.

Also, don’t forget to read our guide on how to Download YouTube Videos – we even teach you how to burn YouTube videos to DVD!

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1. Your internet connection isn’t fast enough. To view video smoothly, you need a connection speed of at least 512kb/s. If your internet plan has a limit, maybe you’ve exceeded it. Find out your connection speed at SpeedTest.
2. You’re running too many programs. If you can usually watch videos online smoothly, this is likely. Try closing programs or even restarting.
3. Your computer isn’t fast enough to process the video smoothly. If it’s over 8 years old, this might be the case.
4. YouTube, MetaCafe, DailyMotion or your ISP might be experiencing high network demand and can’t stream the video smoothly. This is only likely if you usually can view the videos smoothly.

Happy viewing!

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Here’s how to do it:

Internet Explorer 7:

1. Click Tools > Internet Options
2. In the “General” tab inside the “Home Page” frame, enter each of the web site addresses on a separate line, ie:

   http://www.logon2.com.au/

   http://www.cryptech.com.au/

   http://www.mylook.cc/

3. Press OK.
4. And you’re done!

Firefox:

1. Visit each of the pages you want to be your home page in separate tabs (Ctrl + T opens a new tab)
2. Click Tools > Options
3. Click “Current Pages” in the “Startup” frame
4. Click OK and you’re done!

This might save you a minute a day, which is about 6 hours a year!

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Just follow these steps:

1. Download VLC Media Player from the VLC Website. You need this to watch the downloaded videos.
2. Go to the video website (ie. YouTube, DailyMotion, etc.) go to the video, and copy the URL (ie. http://www.youtube.com/v/asdfagh0h)
3. Go to the KeepVid website and paste the URL in the textbox. It will download shortly.
4. Enjoy!

It’s a good idea to bookmark the KeepVid website.

Now you can save them for later or take them with you on the road!

Burning YouTube Videos to DVDDownload DVDFlick and run it. You can now add the downloaded YouTube videos to a DVD and watch them anywhere.

Don’t forget to check out our guide on how to Download YouTube Music – learn how to get the music from YouTube Videos Downloaded in MP3 format!

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1. Right-click on a shortcut to Flash
2. Click Properties
3. Go to the ‘Compatibility’ tab
4. Check “Run this program in compatability mode for:”
5. Select “Windows XP (Service Pack 2)” from the list.
6. Click “Ok”

That’s it. Now when you run Flash, you won’t be wasting one minute every five minutes you work. There is one drawback, though. While Flash is running, the Vista theme is switched to “Basic”, but returned as soon as you close it.

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