Do you get any error in console?
I might not be working because of the dependency on Jquery. You can add just the snippet
$(".navi_bild").click(function(){
$("#stage").tikslus360({imageDir:'img/treppe_01/',imageCount:24,imageExt:'jpg',canvasID:' pano',canvasWidth:800,canvasHeight:400, fadeInInterval:10});
});
in the creation complete event of the composition.