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html - Can I fade in a background image (CSS: background-image) with jQuery?

I have a div element with text in it and a background image, which is set via the CSS property background-image. Is it possible to fade in the background image via jQuery?

div {
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  background-image: url(http://upload.wikimedia.org/wikipedia/commons/8/84/Konqi_svg.svg);
  border: 1px solid #666;
  height: 10em;
}
<div>Text</div>
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i have been searching for ages and finally i put everything together to find my solution. Folks say, you cannot fade-in/-out the background-image- id of the html-background. Thats definitely wrong as you can figure out by implementing the below mentioned demo

CSS:

html, body

height: 100%;   /* ges Hoehe der Seite -> weitere Hoehenangaben werden relativ hierzu ausgewertet */
overflow: hidden;   /*  hide scrollbars */
opacity: 1.0;
-webkit-transition: background 1.5s linear;
-moz-transition: background 1.5s linear;
-o-transition: background 1.5s linear;
-ms-transition: background 1.5s linear;
transition: background 1.5s linear;

Changing body's background-image can now easily be done using JavaScript:

switch (dummy)

case 1:

$(document.body).css({"background-image": "url("+URL_of_pic_One+")"});
waitAWhile();

case 2:
$(document.body).css({"background-image": "url("+URL_of_pic_Two+")"});
waitAWhile();

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