自定义图片按钮

CSS如下：
.imageBtn_item{padding-top:15px;padding-bottom:10px;}.bossTool-item-wrapper{margin:5px;padding:5px;}.bossTool-x-btn-center {/*background:transparent url(../images/button/button_center.gif) repeat-x;*/font-size:12px;/*text-align:center;*/vertical-align:middle;white-space:nowrap;background-position:0;/*height:23px;width : 75px;*/}.bossTool-x-btn-right{/*background:transparent url(../images/button/button_right.gif) no-repeat;*/width:3px;background-position:center right;height:23px;}.bossTool-x-btn-left {/*background:transparent url(../images/button/button_left.gif) no-repeat;*/width:3px;background-position:0;height:23px;}.bossTool-x-btn-text{background-position:center;background-repeat:no-repeat; font-size:12px; color:#FFFFFF;cursor:pointer;white-space:nowrap;padding:0;}.bossTool-x-btn em {font-size:12px;font-style:normal;font-weight:normal;}.bossTool-x-btn-center em {font-size:12px;font-style:normal;font-weight:normal;}.toolbtnText{font-weight:bold;text-align :center;}