Try something like
dataservices.picturesLayoutService = function () {
function buildPicturesLayout(divImageContainer, data) {
$("#" + divImageContainer).empty();
//iterate through the items and create a list
$.each(data.items, function (i, item) {
$("#" + divImageContainer).append('<img src="' + item.media.m + '" />');
})
}
return {
buildPicturesLayout: buildPicturesLayout
};
}();
//write a callback function which will receive the ajax response and pass it to the buildPicturesLayout method
dataservices.pictureFeedService.searchForPictures(searchTags, function (data) {
dataservices.picturesLayoutService.buildPicturesLayout("images", data)
});