CSS issue, background image not showing?

Can anyone tell me what's wrong with this, as the image just doesn't wanna show up (wtf)

CSS:
<style type="text/css">

#mouseRegion {
background-image: url (images/iphone.jpg);
height: 59px;
width: 59px;
display: block;
}
</style>

DIV:

<div id="mouseRegion"></div>

ps.picture is definitely there

thanks

Added (1). Hi, thanks for the answer, the image is saved locally in a folder called images in the root folder. I have the same image saved on my ftp and tried using the link too, but that didn't work either.

Added (2). Tried with quotes too.

Why is YouTube on Firefox so unbelieveably slow, slower than on iPhone?

I have tried clearing history, cookies and cache, then restarted firefox. I still can load videos faster on YouTube using my iPhone 4s using the same Wi-Fi that my laptop is using for Firefox and they load in seconds. On Firefox it doesn't even load a third of the way and I've already watched a 5 minutes video twice on my phone.

What can I do to make Firefox load Youtube videos faster? Their help page was no help, told me nothing that made it better and offered only really stupid suggestions to be honest.

Added (1). I went to add-ons but there's no update feature. I'm super confused, when did this get so complicated…

Added (2). Updated Adobe Flash Player. And now it's even slower, more choppy and now the sound is becoming affected. This sucks. My internet connection is very fast.something is wrong with the browser.

Added (3). I ran the two commands. No effect still choppy as hell and sound is still affected. I try to let the whole video load, but once I go back to the starting point (I have to "chase" the grey bar to make it load, then bring it back to the beginning to start the video from the beginning) it just all goes away like it didn't load anything. Then it's choppy and keeps trying to reload it over again.

Added (4). 13 add-ons I disabled the old Shockwave version it's still there for some reason.

Added (5). No I didn't.

I tried lowering the quality of video… No help. Disabling the older version of Shockwave, believe it or not, made the choppiness worse.

Added (6). Restarting computer didn't help.

It doesn't tell me what's outdated or not on the addon page.

Added (7). Clicked on link where it checks for out of date add ons. Flash is up to date. Playback still choppy.

Added (8). Firefox 14.0.1 just updated not very long ago, and I can't remember having this problem with YouTube before the update.

I bought a Mac, how do I get rid of linux and install Mac OS again?

I bought this mac second hand. It is an iBook G4, but the people installed linux on it and I would like the OS software on it instead as I have an iPhone and an iPod and iCloud and I would just rather deal with something that I'm familiar with, but I have been looking and I have no idea how to delete it and put what I want on it.

Can i play Iphone games on PC?

I was able to play Android apps on PC using a software known as Bluestacks. I'm wondering, is there any way to play iphone apps on PC. I have a very strong PC with high graphics and Intel i7. Just tell me the method.