Jquery delete everything except url in a string : I'm new to Jquery and I want to delete everything in this string except for the url(http://momio.me/temporary//assets/cat_9_2.png&quot)


    <div class="game1-sprite noBounceEffect trans_on" style="left: 135px; top: 202px; background-size: 86px; background-image: url(&quot;filesystem:http://momio.me/temporary//assets/cat_9_2.png&quot;); background-repeat: no-repeat; background-position: 20% 90%;">
	<div class="game1-door open"></div>
	<span class="whiteText"></span>
</div>