Prevent loading content

Is there a way to prevent all the shortcode content items from loading on the page simultaneously until one is selected? By default it would appear that all the shortcode content items that are in the drop-down list load on the page automatically when the page is visited but the contents are simply hidden with CSS until one of the drop-down items are selected. I need to prevent all the content boxes from loading until one is selected, then only the selected content is loaded.