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</pre>
== Hiding and Showing Content suing Using JavaScript ==
The next step is to look at how to hide and show contents using CSS and JavaScript. First lets create some paragraphs a paragraph of text in HTML:
<pre>
<p id="layer1">This is layer 1</p>
</pre>
Next we need to define some styles for these layers so that we can distinguish between them (for details on CSS see [[Understanding Cascading Style Sheets (CSS)]]:
<pre>
<style type="text/css">
#layer1 {
background-color: yellow;
height:90px;
width:90px
left:0px;
top:0px;
visibility: hidden;
}
Now we can combine these into an HTML file together with buttons which changes the ''visibility'' property of of the style property to either ''visible'' or ''hidden'':
