Loading Image, How to use?

[LJackson]

Hi All i have downloaded a free loading image from the net to use on my ajax page when its loading the data

the problem is i dont know how to get it to work :(

any ideas
thanks

Luke

here is my page
http://www.kernow-connect.com/Price%20Comparison/stores.php

want my image to show when you change the listbox values to show the user something is happening :)

the image is called pageloading.gif

thanks in advance
Luke