(function ($) {

    $.fn.simplePopup = function(options) {

        var settings = $.extend({
            type: "auto",
            backdrop: 0.4,
            backdropBackground: "#000",
            injectHtml: true,
            inlineCss: true
        }, options );

        function init() {
            startBackdrop(settings.backdrop);
        }

        function startBackdrop(opacity) {
            if (opacity > 1 || opacity < 0) {
                console.log("simplePopup: Please enter a \"backdrop\" value <= 1 of >= 0");
                return false;
            }

            if (settings.injectHtml) {
                insertBackdropHtml(opacity);
            }
        }
    }
})