new → closed
I've created a live test case outputting both the values obtained for height() and width() but also those for the direct style attributes related to these here: http://jsfiddle.net/sVXHw/1/
As you can see (test FF, Chrome, Safari, IE) here there are no problems in retrieving the height at any point. You can click the div as many times as you want or execute additional functions later on but you'll still be able to retrieve the values of these attributes.
There may be an issue with the code you're writing for your slideshow. If you would like additional assistance in figuring out what the cause may be, please feel free to make a post in the forums.