div.collapse  { 
	width:18px;
	height:18px;
	background: url(../imgs/circle_minus_hover.gif) no-repeat ;
	float:right;
	cursor: default;
}
div.collapse:hover { 
	background: url(../imgs/circle_minus.gif) no-repeat ;
}


div.expand  { 
	position:relative;
	width:18px;
	height:18px;
	background: url(../imgs/circle_plus_hover.gif) no-repeat ;
	float:right;
	cursor: default;
}
div.expand:hover { 
	background: url(../imgs/circle_plus.gif) no-repeat ;
}