How to load/preload the images. <br><br><strong>All</strong> - Load all image element in a sequence at the initialisation. This will boost up the loading of your page, and will preload all images to have a smooth and breakless run already in the first loop.  <br><br><strong>Smart</strong> - It will load the page as quick as possible, and load only the current and neighbour slide elements. If slide is called which not loaded yet, will be loaded on demand with minimal delays.   <br><br><strong>Single</strong> - It will load only the the start slide. Any other slides will be loaded on demand.