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How to keep the background color persistent in css active?

I have a image, when user clicks on it I am changing the background color of it. for ex:
HTML:
<img src="images/image1.png" />
CSS:
img:active{
background-color:red;
}
But the red color is not persistent. and the red color is replaced with the old color. How can I make it persistent ?

OnClick functionality isn't achievable solely through CSS. You will need to use javascript to achieve this.

Just use jQuery:
$('img').click(function(){
$(this).addClass('red');
});
then in css make sure you have something like this:
img.red {
background-color:red;
}

As others pointed out, you should use javascript with onclick event handler, save the clicked element's state and toggle at right time... However I would like to introduce this work-around without using any script, it uses some focusable wrapper (like a button) to mimic other unfocusable element (like the image) and use the :focus pseudo-class to style the active element (as you understand, it can be in such a state by clicking or tabbing):
HTML:
<button class="wrapper">
<img/>
</button>
CSS:
.wrapper > img {
background-color:inherit;
width:200px;
height:200px;
}
.wrapper {
border:none;
padding:0;
cursor:default;
}
.wrapper:focus {
background-color:red;
outline:none;
}
Here is the working fiddle, try clicking the image and then clicking on some point outside to see it in action.

Animating the Border of a TextBox in JavaScript

I am trying to test out a concept for a loading animation, but I have no idea where to start. Basically, I have a text box that is filled in automatically with some JavaScript on the page, but it can take a few seconds to load. I am looking for a way to put something resembling the IE11 indefinite-time progress bar inside it. It would be like a bar about 1/2 of the width of the box and only a few pixels in height that animates across the box. Something like this:
How can I do this in a way that will work in all major browsers (including mobile)?

This is my solution, hope that it helps you in the right direction (and I hope you don't mind using some jQuery):
HTML
<div id="container">
<div id="loading_bar"></div>
<input type="text" value="" id="input">
</div>
CSS
#input {
width:296px;
padding:2px;
position:absolute;
top:0;
left: 0;
border:1px solid #ddd;
margin:0;
z-index:1;
}
#container {
position:relative;
background:#ddd;
}
#loading_bar {
width:0;
padding:0;
margin:0;
background:#00f;
height:4px;
position:absolute;
top:2px;
left:0;
z-index:2;
}
jQuery
function to_zero(){
$("#loading_bar").css({'width':'0'});
}
function to_max(){
$("#loading_bar").animate({'width':'300px'}, 2000);
}
setInterval( function(){to_zero();to_max(); }, 2200);
DEMO

Browsers render borders statically;
About animating the border of a TextBox (presuming input:text or textarea) cross-borwser AND cross-platform is impossible. For a lesser scoped of browser, per say, modern browsers, there is css-level3 with border-image.
But it will be painfull.
About displaying a progress bar upon a TextBox, it will be quite easier, especially if your content is loaded via AJAX. It's all about a container displayed position absolute left top. Then the css animes the container.
See jquery-ui or search the net for 'animated progess bar'

I've always done 2 spans. You have one as the wrapper, with 100px. Then, As the % of loading, you just have the other span being x pixels wide.
You could then make a setTimeout function to keep the animation going. Slowing adding pixels until the inside span is as wide as the wrapper span.
This should load very fast.

CSS overlay coming from corners

I am trying to bring in a overlay that comes on the top of a image when you hover with your mouse. Currently I have it coming just from the top, and eases down to the bottom. What I am trying to achieve though, is have the overlay split into 2 sections, coming from the top left and bottom right and join in the middle. I know this is hard to understand with just text, so I created an image.
I have seen this done before, but am not sure what it is called, or how to achieve the effect. Help would be appreciated

Here's my stab at it: http://jsfiddle.net/
The basic idea is that you're just doing this, but with the wrapper element rotated. This solution would obviously need to checked for compatibility.
This could be achieved without a .slide element, but would require more manual positioning of the elements.

Here is a basic example using jquery.
Note, the cool kids would do this with css3.
http://jsbin.com/eyilog/1/edit
In this example the divs are absolutely positioned outside the containing element. overflow:hidden; makes sure they are invisible. On hover jquery animates their positions back inside the div, overlaying the content of the div.
To make it diagonal just use transparent images.
$(".text").hover(function() {
$(".topleft").animate({top: "+0px"}, 500);
$(".bottomright").animate({bottom: "+0px"}, 500);
});
<div class="text">
<div class="topleft"></div>
text
<div class="bottomright"></div>
</div>
.text {
background-color:red;
width:100px;
height:100px;
margin:auto;
overflow:hidden;
position:relative;
}
div div {
background-color:black;
height:50px;
width:100px;
position:absolute;
}
.topleft {
top:-50px;
}
.bottomright {
bottom:-50px;
}

Display image left of href hover

So i've got wall of text with links, when hovering over the href it should display a image on the exact same line and always on the left of the full text, so not next to the link itself (meaning background image won't do the trick :( ). I've been tinkering around a bit, but without succes, so hoping you guys can help me out with this one :)
As seen in the second screenshot, "kalender" and "menssana#home" are hrefs and need the same image next to the text. Wether it's javascript or css, any help is appreciated!
Html-example can be found here: http://www.menssanahealth.be/diensten/particulieren/

I would nest a hidden image in the link and create a CSS rule on hover to show the image.
Basically this:
A IMG {
display:none;
}
A:hover IMG {
display:inline;
}
But here is a more fleshed out example using absolute positioning for the image so that it doesn't affect the layout of the link but instead shows up to the left of it.
http://jsfiddle.net/HLKQ3/

You can use CSS :before for this like so
.link:before{
content:'';
width:50px;
height:20px;
background:url('urlToYourFeatherThing.png') no-repeat top left;
position:absolute;
top:0;
left:-20px; // width of image
display:none;
}
.link:hover .link:before{
display:block;
}
Oh, and you may need your .link to be position:relative; so that the leaf is positioned absolutely to the parent.
This has not been tested, if you encounter any problems please let me know.
Good Luck.
#Connor

If you have an span with classname 'leaf' with in the a tag you can write code like below in jquery,
HTML should be like this,
<span class='leaf'> </span><strong>Sauna</strong>
Jquery should be like this,
$("#dienst-content a").hover(
function () {
$(this).find('span.leaf').show();
},
function () {
$(this).find('span.leaf').hide();
}
);
and the CSS,
span.leaf
{
width:50px;
height:20px;
background:url('url-to-leaf-image.png') no-repeat top left;
display: none;
}

Off topic, I have a couple of observations:
the page seems to contain a list of services so using a <ul><li> ... would seem more appropriate markup than <p>-
Some list items have links, others don't it would be more user
friendly to differentiate a list item with a link from a list item
without link -- e.g. use bold text, different color, add an arrow or underline etc
Back on topic:
Using a background image is totally feasible by using a combination of left padding and left negative margin. However if you really don't want to that direction then I would add an extra span within the <a>, and hide it unti the link is hovered.

I've found a solution with jquery :)
You can see it in action here
i've added the following script
<script>
$('<img src="<?php echo get_template_directory_uri(); ?>/images/bloemblaadje.png" class="bloemblaadje"/>').prependTo("#dienst-wrapper a");
</script>
And the css
#dienst-content{
position:relative;
}
.bloemblaadje {
display:none;
position:absolute;
left:0;
margin-left:-60px;
text-align: center;
}
#dienst-content a:hover .bloemblaadje{
display: inline;
}
It might be heavy on a page with alot of links, but this seems the best solution for this design.
Thanks for the many suggestions!

How to show text/info in certain place on textover using javascript

http://www.baelkopat.com/GECCo/goingGreenTest.html is what I have so far. What I need to learn is how to show the additional text when a user mouseOvers the link. i.e. when a user mouseOvers on "Activity Guide(PDF)" the "Download and print...." shows up.
I have pretty good experience with ActionScript not that very new to JavaScript. I was wondering how to make the mouseOver effect happen.
The hover div is crated using css
overTextA{
position:absolute;
left:190px;
top:7px;
width:280px;
padding:10px 15px;
background-image:url(../images/navMenuOver.png);
background-repeat:no-repeat;
z-index:3;
}
overTextB{
position:absolute;
left:190px;
top:40px;
width:280px;
padding:10px 15px;
background-image:url(../images/navMenuOver.png);
background-repeat:no-repeat;
z-index:3;
}
and in HTML
<div id="overTextA"> Download and print a PDF-version of the Junior <i>Going Green with GECCo</i> guide, with activity information, instructions, and resources. </div>
<div id="overTextB"> Take the <i>GECCo Challenge !</i> Help our planet by saving energy AND earning money for conservation.</div>
I am not sure that is the best way to do it but for now I just want to have a workable version working that shows the appropriate text when mouseOver on the nav link.
Thanks, Rex

You could achieve this in a straight forward fashion using a library like jQuery.
Here is a tutorial that will walk you through using a .hover() function:
http://www.learningjquery.com/2007/02/quick-tip-set-hover-class-for-anything
Clarification:
Add / remove your classes to the hover element, adding would display it, and removing or hiding it would take the text element away. jQuery is very useful when you don't want to dive into JS too much. Hope that helps!