jquery - Parallax scrolling start at specific height -


i trying implement parallax scrolling website. works perfect. problem is, have parallax section @ bottom. when scrolling down, image have set background image further above, this: enter image description here

the photo should stop @ begin of gray section, see bellow.

my code:

// can used $(document).ready() / $(window).load() $(document).ready(function() {     // cache window object     $window = $(window);      $('section[data-type="background"]').each(function(){     var $bgobj = $(this); // assigning object          $(window).scroll(function() {              // scroll background @ var speed             // ypos negative value because we're scrolling up!                                           var ypos = -($window.scrolltop() / $bgobj.data('speed'));               // put our final background position             var coords = '50% '+ ypos + 'px';              // move background             $bgobj.css({ backgroundposition: coords });          }); // window scroll ends      });       });

below html markup:

<section class="quote" id="quote-home" data-speed="4" data-type="background">     <div class="container_12">         <header class="grid_12 centered">             <h1>             beginning of knowlegde             <br>             discovery of              <br>             not understand.”             </h1>              <span class="cross-x"></span>              <h2>- frank herbert</h2>         </header><!-- end header.grid_12 -->       <div class="clear"></div><!-- end div.clear -->     </div><!-- end div.container_12 --> </section><!-- end section#quote -->  <section id="twitter" class="alt">

and css:

#quote-home {     height: 500px;      margin: 0 auto;      width: 100%;      max-width: 100%;      position: relative;      background: url(../images/coffeescripthands.jpg) 50% 0 no-repeat;      -webkit-background-size: cover;     -moz-background-size: cover;     -o-background-size: cover;     background-size: cover;  }


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