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LESSON 8: Absolute Positioning

Because you already have an understanding of the box model, you now can visualize how each block element are stacked on top of one another. The inline elements go with the flow. If you resized the browser, they would simply reflow to their new position without breaking the line.
However, this flow can be broken by using the CSS position property. The position property can take on any of the following values: * relative * absolute * static * flixed
Positioning can make use of the offsets top, bottom, left, and right to position the box with specific values.
When position property is not set, it defaults to static

LESSON 10: HTML Event Handle AttributesAttributes
HTML elements can have optional attributes, called event-handlers to allow the element to respond to user-interactions. Different element-handlers work with different HTML elements.
So what are event-handlers? Event handlers are javascripts that respond to actions from the browser and the user. Each event handler is associated with a particular browser object, and you can specify the event handler in the HTML tag that defines the object.
You specify the event handler as an attribute to the HTML tag and include the JavaScript statement to handle the event within the quotation marks. Each HTML tag can comprise more than one event handlers.
Event handlers are executed when their events happen.

Example : * <a href="#" onClick="alert('Hello');"> Try Me </a> * <span onMouseOver="this.style.backgroundColor='red';" onMouseOut="this.style.backgroundColor='white';"> Try Me <span>

Global Event Attributes
You can add event-handlers as attributes inside HTML tags to trigger Javascripts when user interacts with the element.
Below are the global event attributes that can be added to HTML elements to define event actions.

Window Event Attributes
Events triggered for the window object (applies to the <body> tag): Attribute | Description | onload | Fires after the page is finished loading | onunload | Fires once a page has unloaded (or the browser window has been closed) |

Form Events
Events triggered by actions inside a HTML form (applies to almost all HTML elements, but is most used in form elements): Attribute | Description | onblur | Fires the moment that the element loses focus | onchange | Fires the moment when the value of the element is changed | onfocus | Fires the moment when the element gets focus | onselect | Fires after some text has been selected in an element | onsubmit | Fires when a form is submitted |

Keyboard Events Attribute | Description | onkeydown | Fires when a user is pressing a key | onkeypress | Fires when a user presses a key | onkeyup | Fires when a user releases a key |

Mouse Events
Events triggered by a mouse, or similar user actions: Attribute | Description | onclick | Fires on a mouse click on the element | ondblclick | Fires on a mouse double-click on the element | onmousedown | Fires when a mouse button is pressed down on an element | onmouseout | Fires when the mouse pointer moves out of an element | onmouseover | Fires when the mouse pointer moves over an element | onmouseup | Fires when a mouse button is released over an element |

LESSON 11: INTRO TO JAVASCRIPT
A function without any code looks like this: function myFunction() {
}
You start with the word function (lowercase "f"). After a space you type a name for your function. Function names are just like variable names in that you can call them anything you like. But they can't start with a number; you can't have spaces in the name; and the variable should contain only letters, numbers ( but not the first character of the variable), a dollar sign ($) or an underscore ( _ ).
After your function name you need a pair of round brackets. The round brackets are for something called arguments, which we'll get to shortly.
Finally, you need a pair of curly brackets. Any code you want to execute goes between the two curly brackets.
You don't need to spread your functions out over multiple lines, however. This is perfectly valid: function myFunction() { alert("My Function"); }
But your code will be easier to read if your functions aren't all on one line.
To test functions out, create a new web page. You can use the template you created in an earlier section. In between two SCRIPT tags, add the following: function myFunction( ) { alert( "My Function" );
}
Your web page code should look like this:

Now load your web page into a browser. You should find that nothing happens: the alert between the two curly brackets of the function doesn't display.
The reaso Return valueults from your code (is it a valid email address or not). Or if you have a check box asking user to agree to your terms and conditions, you'd w

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