Executes a callback when an element's visibility changes
Example: http://jsfiddle.net/shaunbowe/kb24kqfx/4/
$("#tester").visibilityChanged({
callback: function(element, visible, initialLoad) {
// do something here
// element: the element in question
// visible: (bool) if the element is currently visible
// initialLoad: (bool) if the callback is being trigger for the
// first time on an element (i.e. on page load)
},
runOnLoad: false,
frequency: 100
});