hi! how can i post a listing in a single step, i mean, select category and in the same windows fill the title, body and basic characteristics of the listing without change of page after select category, anybody can help me? i want to achive a single form easy easy easy to use for everybody, i think in a modal form, like mega registration form or something like that.

for example like this one: https://bootsnipp.com/snippets/BEdDE