function getAllFilesInFolder(listName) {
    var images = [];
    var clientContext = SP.ClientContext.get_current();
    var lists = clientContext.get_web().get_lists();
    var oList = clientContext.get_web().get_lists().getByTitle(listName);
    var collListItem;
    //SP.CamlQuery.createAllItemsQuery()
    var camlQuery = SP.CamlQuery.createAllItemsQuery();

     var query = SP.CamlQuery.createAllItemsQuery();
       // camlQuery.set_folderServerRelativeUrl("/"+ListName+"/"+Folder);



    collListItem = oList.getItems(camlQuery);
    clientContext.load(oList);
    clientContext.load(collListItem, 'Include(File, FileSystemObjectType)');

    clientContext.executeQueryAsync(
        function () {
           var listItemEnumerator = collListItem.getEnumerator();
        while(listItemEnumerator.moveNext())
        {
            var currentItem = listItemEnumerator.get_current();
            if(currentItem.get_fileSystemObjectType() == "0")
            {
                var file = currentItem.get_file();
                if(file != null)
                {
                    //console.log('File Name: ' + file.get_name() + '\n' + 'File Url: ' + file.get_serverRelativeUrl());
                    images.push(file.get_serverRelativeUrl());
                }



            }

        }


             returning(images);

        },
        function (sender, args) {
            alert('Error getting list items: ' + args.get_message());
        }
    );

 }