// rotation speed, path to images
 var rotatorEn = new dw_RandRotator(60000, "http://www.polymtl.ca/esteban/images/headers/");
 var imgListEn = ["header1-en.png", "header2-en.png", "header3-en.png", "header4-en.png", "header5-en.png" ];
 // images array, width and height of images, transition filter (boolean)
 rotatorEn.setUpImage(imgListEn,false);