.left_social{
	float:right;
	height:40px;
	width:188px;
	margin-bottom:10px;
	padding-right:40px;
}

.left_social a{ float:right; margin-left:5px;}

.so_bt1{width:30px; height:30px; background:url(facebook.png) top left no-repeat;}
.so_bt1:hover{width:30px; height:30px; background:url(facebook_hover.png) top left no-repeat;}
.so_bt2{width:30px; height:30px; background:url(twitter.png) top left no-repeat;}
.so_bt2:hover{width:30px; height:30px; background:url(twitter_hover.png) top left no-repeat;}
.so_bt3{width:30px; height:30px; background:url(linked.png) top left no-repeat;}
.so_bt3:hover{width:30px; height:30px; background:url(linked_hover.png) top left no-repeat;}