.calc_but 
{ 
	background-image:url(http://www.spiribit.com/support/ursa/files/calc/calc_button_v4b_200px.jpg);
	background-repeat:no-repeat;
	width:200px; height:138px; cursor:pointer; display:block; 
}
a.calc_but:link, a.calc_but:visited {background-image:url(http://www.spiribit.com/support/ursa/files/calc/calc_button_v4b_200px.jpg); border: solid 1px #630; }
a.calc_but:hover { border: solid 1px #000000; }