jQuery Cycle Plugin Not Working Inside of Modal Box (Simple Modal Plugin)
You are initializing the cycle on document ready. You need to initialize on modal show.
Check their documentation
onShow [Function:null]The callback function used after the modal dialog has openedSomething like this
data.modal({ overlayCss:{backgroundColor:'#FFF'}, containerCss:{backgroundColor:'#fff'}, onShow: function (dialog) { $('.product-images').cycle({ fx: 'none', next: '.slide', timeout: 0 }); } });