function ShowDetails() { 
    $("#DetailsPopup").css('z-index', 9990); 
   $("#DetailsPopup").fadeIn('slow'); 
}

$(document).ready(function (){
   //Hide popup 
   $("#DetailsPopup").hide();
   
   //Close Popup
   $("#btnClose").click(function (){ 
      $("#DetailsPopup").fadeOut('slow'); 
   });
   
});