#toBottom{display:none;text-decoration:none;position:fixed;bottom:50%;right:50px;overflow:hidden;width:51px;height:51px;border:none;text-indent:100%;background:url(../img/ui.tobottom.png) no-repeat left -51px;}
#toBottomHover{background:url(../img/ui.tobottom.png) no-repeat left top;width:51px;height:51px;display:block;overflow:hidden;float:left;opacity:0;-moz-opacity:0;filter:alpha(opacity=0);}
#toBottom:active, #toBottom:focus{outline:none;}