#gallery_content {
  background: #000 url(../images/mo-bg-gallery.jpg) no-repeat 0px 0px;   
  padding-top:125px; 
  height: 836px;
}
#home_page_content {
  height: 686px;
}

.fixed_top_of_viewport {  
    position:absolute;
    top:0;
    left:0;
    width:100%;
    height:100%;
    z-index:1000;
  }