function initCorners() {
    var settings = {
          tl: { radius: 10 },
          tr: { radius: 10 },
          bl: { radius: 10 },
          br: { radius: 10 },
          antiAlias: true
    }
    
    var settings_main = {
          tl: { radius: 5 },
          tr: { radius: 5 },
          bl: { radius: 5 },
          br: { radius: 5 },
          antiAlias: true
    }
    
    curvyCorners(settings_main, "#main");
    
    curvyCorners(settings, ".kader");
    curvyCorners(settings, "#main_rechts");

    curvyCorners(settings_main, "#footer");
}