.loader {
	position: fixed;
        left: 500px;
        top: 270px;
        width: 20%;
        height: 15%;
        z-index: 9999;
        border:ridge;
        background: url('/Content/Images/mainloader.gif') 50% 50% no-repeat rgb(178,218,228);
}

 .AjaxProcessing {
        position: fixed;
        left: 500px;
        top: 270px;
        width: 20%;
        height: 15%;
        z-index: 9999;
        border:ridge;
        background: url('/Content/Images/mainloader.gif') 50% 50% no-repeat rgb(178,218,228);
    }