$(document).ready(function() {

    // Hides alle articles (.fullPrices) by default after the document is ready.
    $('.fullPrices').hide();

    // Adds a click function to the preveiw link. Shows the article (.fullPrices). Hides the previewPrices after click.
    $('.showAll').click(function() {
        $('.previewPrices').hide(); // uses the closing function and effect "hide"
        $('.fullPrices').show();
        $('.previewPrices').next().slideDown('normal'); //uses the opening function and effect "slideDown"
        return false;
    });
});