Use CSS Sprit filters to make transparent images under "CSS" IE6

. Service{/*position:relative;*/Height:96%!important;Overflow:Hidden;}. Pright{Height:40px;text-align: Right;Margin-top:30px;Padding-right:50px;Overflow:Hidden; }. Pright. Btn_order{background:url ('.. /images/order_icon02.png ') 0 0 no-repeat;width:170px;Margin-top:0px;Border:None;Height:40px;cursor:Pointer;_filter:progid:DXImageTransform.Microsoft.AlphaImageLoader (src= '. /js/images/order_icon02.png ', sizingmethod= ' image '); _background-image:none;Margin-top:0px;Outline:None;}. Pright. Btn_stop{background-position:0-41px; _margin-top:-41px; _margin-bottom:1px;}. Pright. Btn_order:focus{ Border: none; margin-top: 1px;}. Layer_center{width:378px;Height:282px;Overflow:Hidden;background:URL (.. /images/order_icon01.png) 0-282px no-repeat;_margin-top:-282px;_filter:Progid:DXImageTransform.Microsoft.AlphaImageLoader (src= '. /js/images/order_icon01.png ', sizingmethod= ' image ');_background-image:None;}. Refuse{_margin-top:0;background-position:0 0;}. Main_btn{Height:282px;width:378px;Overflow:Hidden;position:Absolute;Top:50%; Left:50%;Margin-left:-189px;Margin-top:-211px;}

IE8 when the button is selected, the button moves up one pixel, and the release mouse button moves down by 1 pixels so write Xxx:focus

IE6 the selected button, release the mouse button will move down 1 pixels//_margin-bottom:1px;

Because IE6 under Background-image:none, so background-position does not support the use of margin-top to control the movement of the picture up and down