.hdrwrpr {width:980px; height:100px; position:relative; background:transparent url(/images/hd-bg.gif) no-repeat;}
.hdrwrpr-fall {width:980px; height:100px; position:relative; background:transparent url(/images/hd-fall-bg.jpg) no-repeat;}
.hdrwrpr-spring {width:980px; height:100px; position:relative; background:transparent url(/images/hd-spring-bg.jpg) no-repeat;}
.hdrwrpr-winter {width:980px; height:100px; position:relative; background:transparent url(/images/hd-winter-bg.gif) no-repeat;}