title: Show spinning wheel or progressbar when website is loading
body: <p>I am building a treeview with a jQuery plugin called jquery-treeview. Building up this treeview takes a lot of time (ca. 5-7 sec) and I want to show a spinning wheel or a progress bar when the page is loading. Does anyone know how to do that? I only found solutions for loading videos or images where it is known how much data has to be loaded.</p>