You have a button definition as given below:

<input class="a" type="button" value="Calculate">

To load an image "Img2.jpg" as the background of the button on a mouseover event, you can use:

What does the code snippet do?

The following code snippet is used in form validation, the validate function is supposed to return a true if all validations are successful and false if the validation fails. However, the data is always submitted even if the validation fails, what could the cause be?

If an image is placed styled with z-index=-1 and a text paragraph is overlapped with it. Which one will come on top?

You are developing an application and there is a possibility of certain users using older browser versions. You want to hide the JavaScript code in the browsers that do not support JavaScript. How would you do this?

When does the load event of the browser occur?

Which is true style, if h2 and h3 will be positioned on the top of each other? h2{z-index:1;} h3{z-index:2;}

Consider the following validate function: This function should be called as soon as the user leaves the field. What will you do?

You are developing a website for children. You want to format the borders of big cells (as mentioned below) for some fun game: Left Border:double Right Border:dashed Top Border:dotted Bottom Border:solid Which of the following would be the correct style definition?

When does the load event of the browser occur?

You are developing an application and there is a possibility of certain users using older browser versions. You want to hide the JavaScript code in the browsers that do not support JavaScript. How would you do this?