This page uses 'wait' cursor while the image is loading.  

<img style="cursor:wait" onLoad="javascript:alterCursor('largeImage', 'auto');"

  id="largeImage" src="images/largeimage.jpg" width="640" height="480">

First, it sets the cursor style to 'wait'; when the image is loaded, the cursor is set to 'auto'.  While the image has not been loaded, move the cursor over the image area to see the 'wait' cursor.
If you're using a fast connection, you might not see the effect.