#nav a.home {overflow: hidden; background: url(http://static.tumblr.com/8buytvw/A05mjw1bf/home.png) no-repeat;-webkit-transition-duration: .50s;-moz-transition: 50s; -o-transition: 50s; display: inline-block; width: 97px;height: 35px; margin-left:-2px;}
#nav a.home:hover{background-position: -0px -39px;}
#nav a.ask {overflow: hidden; background: url(http://static.tumblr.com/8buytvw/M8Nmjw1bm/inbox.png) no-repeat; display: inline-block; width: 95px;height: 35px;-webkit-transition-duration: .50s; -moz-transition: 50s; -o-transition: 50s; margin-left:16px;}
#nav a.ask:hover{background-position: -0px -39px;}
#nav a.themes {overflow: hidden; background: url(http://static.tumblr.com/8buytvw/iacmjw1n7/themes.png) no-repeat; display: inline-block; width: 137px;height: 35px;-webkit-transition-duration: .50s;-moz-transition: 50s; -o-transition: 50s; margin-left:16px;}
#nav a.themes:hover{background-position: -0px -39px;}
#nav a.extras {overflow: hidden; background: url(http://static.tumblr.com/8buytvw/aodmjw1q7/extras.png) no-repeat; display: inline-block; width: 124px;height: 35px;-webkit-transition-duration: .50s; -moz-transition: 50s; -o-transition: 50s; margin-left:16px;}
#nav a.extras:hover{background-position: -0px -39px;}