.keyBack{
	background-image:url(../OlymMathLib/keyImg.png);
	width: 290px;height: 260px; background-position:0px 0px;
	cursor: pointer; position: absolute;z-index: 1000;
}
.keyCloseBtn,.keyBtn{
	background-image:url(../OlymMathLib/keyImg.png);
	cursor: pointer;
}
.keyCloseBtn{ 
	width: 43px;height: 43px; 
	background-position:-300px 0px; 
	position:absolute; left:10px; top:4px;
}
.keyCloseBtn:hover{ background-position:-350px 0px; }
.keyBtn{ width: 66px;height: 66px; background-position:-400px 0px; }
.keyBtn:hover{ 					   background-position:-470px 0px; }
.keyNum_0,.keyNum_1,.keyNum_2,.keyNum_3,.keyNum_4,.keyNum_5,.keyNum_6,.keyNum_7,.keyNum_8,.keyNum_9,.keyNum_clear,.keyNum_point{
	background-image:url(../OlymMathLib/keyImg.png);
	width: 40px;height: 40px;
	cursor: pointer;
	position: absolute; left: 13px; top: 13px;
}
.keyNum_0{ background-position:-295px -70px; }
.keyNum_1{ background-position:-340px -70px; }
.keyNum_2{ background-position:-385px -70px; }
.keyNum_3{ background-position:-430px -70px; }
.keyNum_4{ background-position:-475px -70px; }
.keyNum_5{ background-position:-295px -115px; }
.keyNum_6{ background-position:-340px -115px; }
.keyNum_7{ background-position:-385px -115px; }
.keyNum_8{ background-position:-430px -115px; }
.keyNum_9{ background-position:-475px -115px; }
.keyNum_clear{ background-position:-295px -160px; }
.keyNum_point{ background-position:-340px -160px; }