Posted by hank,
Fri Oct 26 00:30:00 UTC 2007
So, I though it would be interesting to mimic browser behavior with error pages. I decided I needed to make a page that looked exactly like the Firefox Server-not-found page. I managed to copy the source using Firebug, and I extracted the css out of the jar files on my system. Anyway, I ended up with some source for IE and some source for Firefox.
I left little invisible links in each one (search for ‘Supplies’ on the page). I also removed all the default javascript from the Firefox version and replaced the Try Again action with a simple reload one-liner.
Then, I just wrote some awesome PHP to take care of which one to load, and called it index.php:
<?php
if (preg_match('/MSIE/i', $_SERVER['HTTP_USER_AGENT'])) {
readfile("errortest-ie.html");
} else {
readfile("errortest-ff.html");
}
?>
And we’re done. Not bad, eh?
Tags: web design
Posted by hank,
Sat Oct 20 04:05:00 UTC 2007
You can still get 13% off a new Site5 7.5TB/750GB/$7.50 Plan until November! These guys are a great rails host. Get this deal while it’s hot!
Code: HALLOWEEN2007
Tags: web design
Posted by hank,
Sun Oct 07 15:47:00 UTC 2007
The Site5 deal just got better. Join now!
Site5 has been great hosting. The site you’re browsing now uses it. I bought this deal when it was 55GB of storage, 5TB of bandwidth, and 55 domain pointers. Now it’s 750GB, 7.5TB, and Unlimited domain pointers. It’s great Linux-based hosting that is Ruby and Rails friendly. They have support for every PHP application out there, as well as a great forum and wiki that can help you with just about any issue you have.
Here are some other posts I’ve made about it:
This one is from when they tripled their deal about a month ago. There is a bandwidth test in there that shows me getting 1.86 MEGABYTES per second transfer from them. They are not a slow host.
This one is from when they doubled the deal.
Tags: web design
Posted by hank,
Sat Sep 08 15:50:00 UTC 2007
Yes, it’s true, Google has released a simple iframe generator so you can embed Google Maps into anything, like this:
View Larger Map
For the record, Brickskeller is a pretty awesome pub. I highly recommend it if you are in the D.C. area.
Tags: web design
Posted by hank,
Tue Aug 21 06:04:00 UTC 2007
This Demo is an example of a major issue in Java. They seriously need to at least give the user a warning before fullscreening. I mean, that demo could have been really bad. Hint: goatse.
On the other hand, this would be AWESOME for presentations.
Tags: web design
Posted by hank,
Sun Aug 19 17:42:00 UTC 2007
Of course I know that a simple Greasemonkey script can very easily thwart this, but I don’t expect most people to go out and find it to defeat this. If you don’t like my google ads, you can read this wonderful entry.
function sendJerksAway() {
// Bye
eval(unescape("%69%66%28%24" +
"%24%28%75%6e%65%73%63%61%70%65" +
"%28%27%25%35%62%25%36" +
"%65%25%36%31%25%36" +
"%64%25%36%35%25%33" +
"%64%25%36%37%25%36%66%25%36%66%25" +
"%36%37%25%36%63%25%36%35%25" +
"%35%66%25%36%31%25%36%34%25%37%33%25%35%66" +
"%25%36%36%25%37%32%25" +
"%36%31%25%36%64%25%36%35%25%35%64%27%29%29%2e%6c" +
"%65%6e%67%74%68%20%3d%3d" +
"%20%30%29%20%64%6f%63%75%6d%65%6e%74" +
"%2e%6c%6f%63%61%74%69%6f" +
"%6e%20%3d%20%22%68%74%74%70%3a" +
"%2f%2f%67%6f%6f%67%6c%65%2e%62%6c%6f" +
"%67%6e%65%77%73%63%68" +
"%61%6e%6e%65%6c%2e%63%6f%6d" +
"%2f%61%72%63%68%69%76%65%73" +
"%2f%32%30%30%37%2f%30%37" +
"%2f%32%34%2f%67%6f%6f%67%6c%65%2d%72%65%63%6f%6d" +
"%6d%65%6e%64" +
"%73%2d%74%75%72%6e%69%6e%67" +
"%2d%6f%66%66%2d%61" +
"%64%62%6c%6f%63%6b%2f%22"));
}
Then it’s just this:
<body onLoad="sendJerksAway();">
Tags: web design
Posted by hank,
Sun Jun 10 17:13:00 UTC 2007
Well, I was over at Debian Package of the Day when I noticed an article on KLone. It’s a little application framework that allows you to do XHTML templating in C! Then, you can compile it and send it off to any Linux machine (with a few dependencies of course) to run it. I got it, and it didn’t work for me at first. Then, for some reason, it started working. Here’s what I think did it:
In Ubuntu, I did this:
sudo apt-get install build-essential libssl-dev quilt klone klone-package
Then, I made a new test project:
make-klone-project create -p myhello
This creates a new project directory. Now, go into it and make it your new home:
cd myhello-0.1/
cd userdata/
mkdir www etc
vim etc/kloned.conf
I’m just going to assume you’re using vim because, well, you should be. Make the config file look something like this:
server_list my_http
allow_root yes
my_http
{
type http
addr.type IPv4
addr.port 8880
dir_root /www
}
Now lets give it something to work with (note we’re still in userdata):
vim www/index.klone
<html>
<head><title>Hello Lady!</title></head>
<body>
<% io_printf(out, "Hey, Lady! You call him Dr. Jones!"); %>
</body>
</html>
Now add your precious files to the sauce:
cd ../../site/
klone -c import ../userdata/
# 2 dirs and 2 files imported
cd ..
Now, compile and run it:
kloned-build -o myapp userdata
./myapp -F # This runs it in non-daemonized mode
If you don’t get any errors, congratulations. That means I did something right.
Now, just hop over to here or wherever you specified it to run, and it will magically appear.
Now you can do this:
<html>
<head><title>Hello World</title></head>
<body>
<%
int i;
for(i=0; i < 10; ++i) {
io_printf(out, "Hello Lady! %d<br />", i);
}
%>
</body>
</html>
Then run this to rebuild and re-run the server:
kloned-build -o myapp userdata && ./myapp -F
Update
So, I ran some tests, and I have to say, the speed increase from C might be really awesome every now and again. Here’s the code:
clock_t curtime = clock();
#define SEED 35791246
int niter=10000000;
double x,y;
int count=0; /* # of points in the 1st quadrant of unit circle */
double z;
double pi;
/* initialize random numbers */
srand(SEED);
count=0;
for ( i=0; i<niter; i++) {
x = (double)rand()/RAND_MAX;
y = (double)rand()/RAND_MAX;
z = x*x+y*y;
if (z<=1) count++;
}
pi=(double)count/niter*4;
io_printf(out, "# of trials= %d , estimate of pi is %g \n",niter,pi);
io_printf(out, "%f", (double)(clock() - curtime)/(double)CLOCKS_PER_SEC);
All this is is a Monte Carlo method of calculating pi that I stole from here. It takes 0.56 seconds of CPU time on my Core 2 Duo @ 3.3Ghz. Now for the Ruby on Rails test:
# Controller
@start = Time.now
srand(35791246)
iter = 10000000
count = 0
0.upto(iter) do |i|
x = rand().to_f
y = rand().to_f
z = x*x+y*y
count += 1 if z <= 1
end
@pi = count.to_f / iter * 4
@end = Time.now
This finishes in 20.75 seconds (about 40x slower). C is great for things like this. I hope to use KLone in the future for these kinds of tasks.
Tags: web design
Posted by hank,
Tue Apr 17 02:53:00 UTC 2007
Today, Will told me about some awesome image caching. I used it.
//Do some image caching
cached_image = Array(new Image(), new Image(), new Image(), new Image());
cached_image[0].src="image1.jpg";
cached_image[1].src="image2.jpg";
It’s amazing.
Tags: web design
Posted by hank,
Wed Apr 04 19:49:00 UTC 2007
Today, I had a problem doing this:
<input type='text' readonly onFocus="alert('manatee');this.blur();" />
The problem was it would go into an infinite alert loop. That’s not cool. The fix was to reverse the calls:
<input type='text' readonly onFocus="this.blur();alert('manatee');" />
Tags: web design
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