ExtJS图像无法正常显示

Is there some way to find out the list of images associated with an example? When i double click some example then the images are coming perfect but while implementing it in my project, I am having lots of image problems. e.g. In the Grid cell-editing example demo, when I implement it in my project then the Sort Ascending, Sort Descending and Columns images are not getting displayed. I tried running this in Chrome and FIrefox but not getting any missing image error/exception/warning as well.Is there some way to find out the list of image