I'm looking for a method to know if a object (as a Div, a img, etc.) is displayed and visible by the user at the window in JavaScript / jQuery.
When I say "is displayed and visible", that's when the user don't scroll the page enough to let's the object visible (If you know what I mean). But if the user scroll the page and the div is no longer visible (is out the window) the function what I'm looking for should know that.