.gallery_wrap, .gallery_item, .gallery_item_header,.mainImg, ul.preview li  {position: relative; float: left;}

.gallery_wrap {width: 100%}
.gallery_item {width: 47%; margin: 1%;}

.gallery_item_header {width: 100%;}

.mainImg {width: 100%;}

.preview {float: right; width: 250px;}
ul.preview  {list-style-type: none; list-style-position: inside;}
.preview li {margin: 0 0 10px 10px; display: block;}


.clearfloat {clear: both; width: 100%; height: 1px; line-height: 0px; white-space:nowrap;}