美化自己的loading框

._showloading {
    position: absolute;
    left: 0;
    width: 100%;
    height: 100%;
    top: 0;
    background: #ffffff;
    opacity: .8;
    filter: alpha(opacity=90);
    z-index: 99999999
}
._showloading ._showloading-msg {
    background-image: url("../images/loading_16x16.gif");
    background-repeat: no-repeat;
    background-position: 10px center;
    background-color: #f8f8f8;
    text-indent: 22px;
    border: 1px solid #ababab;
    border-radius: 3px;
    text-indent: 28px;
    position: absolute;
    left: 45%;
    top: 50%;
    padding: 5px;
    width: auto;
    height: 30px;
    line-height: 30px;
    font-size: 12px;
    z-index: 99999999
}

.datagrid-mask {
    background: #ffffff;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    opacity: .8;
    filter: alpha(opacity=90);
    display: none;
}
.datagrid-mask-msg {
    background-image: url("../images/loading_16x16.gif");
    background-position: 10px center;
    background-color: #f8f8f8;
    position: absolute;
    top: 50%;
    margin-top: -20px;
    padding: 10px 5px 10px 30px;
    width: auto;
    height: 16px;
    border: 1px solid #ababab;
    border-radius: 3px;
    display: none;
}