#sub-menu ul li a { 
	display: block; 
	height:31px; 
	overflow:hidden; 
	text-indent:-99999px;
	margin-top:-6px;
	background:transparent url(../images/development-menu.png) left bottom no-repeat;
}
	#sub-menu ul li#ecommerce a { background-position:0 0; width:220px;}
	#sub-menu ul li#ecommerce a:hover { background-position:0 -31px; width:220px; }	
	#sub-menu ul li#inventory a { background-position:-220px 0px; width:205px; }
	#sub-menu ul li#inventory a:hover { background-position:-220px -31px; width:205px; }		
	#sub-menu ul li#payroll a { background-position:-425px 0; width:225px; }
	#sub-menu ul li#payroll a:hover { background-position:-425px -31px; width:225px; }
	#sub-menu ul li#shopping-cart a { background-position:-650px 0; width:250px; }
	#sub-menu ul li#shopping-cart a:hover { background-position:-650px -31px; width:250px; }