jQuery Isotope Magento Sort and Filter
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On my Magento Shop (under construction) http://www.lifestylestore24.de/wohnen/gartenfiguren.html i added jQuery Isotope for Layered Navigation and responsive grid. Now i want to add the Sort function. I made the changes for sort fields ascending/descending and sort by.

In the footer you find the both JavaScript files. In the custom.js are the JavaScript Parameters.

Have anyone a idea what i need to put for JavaScript code to start the sort option?