Currently when calling destroy(), it executes remove_style_tags() function. This removes the generated styles from the head if the document, but doesn't clean up Gridster.generated_stylesheets array, so when gridster is later initialized on the same page, it doesn't add the stylesheet. The following piece of code doesn't work as expected:

    // don't duplicate stylesheets for the same configuration
    var serialized_opts = $.param(opts);
    if ($.inArray(serialized_opts, Gridster.generated_stylesheets) >= 0) {
        return false;
    }