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.right_video{background-image:url(video.gif)/*tpa=http://www.nra.gov.cn/images/resources/regioncss/video.gif*/;background-repeat:no-repeat;background-position:right 50%;padding-right:20px;}
.left_photo{background-image:url(photo.gif)/*tpa=http://www.nra.gov.cn/images/resources/regioncss/photo.gif*/;background-repeat:no-repeat;background-position:0px 50%;padding-left:20px;}
.right_photo{background-image:url(photo.gif)/*tpa=http://www.nra.gov.cn/images/resources/regioncss/photo.gif*/;background-repeat:no-repeat;background-position:right 50%;padding-right:20px;}
.left_music{background-image:url(music.gif)/*tpa=http://www.nra.gov.cn/images/resources/regioncss/music.gif*/;background-repeat:no-repeat;background-position:0px 50%;padding-left:18px;}
.right_music{background-image:url(music.gif)/*tpa=http://www.nra.gov.cn/images/resources/regioncss/music.gif*/;background-repeat:no-repeat;background-position:right 50%;padding-right:18px;}
.left_flash{background-image:url(flash.gif)/*tpa=http://www.nra.gov.cn/images/resources/regioncss/flash.gif*/;background-repeat:no-repeat;background-position:0px 50%;padding-left:20px;}
.right_flash{background-image:url(flash.gif)/*tpa=http://www.nra.gov.cn/images/resources/regioncss/flash.gif*/;background-repeat:no-repeat;background-position:right 50%;padding-right:20px;}