The images aren't available on your server at the location you you've specified e.g.
https://www.pulseuniform.com/Tab_Scr...unSelected.gif
https://www.pulseuniform.com/Tab_Scr...unSelected.gif
and so on, if you try opening these images in your browser they are missing.
They are actually at:
https://www.pulseuniform.com/WebPict...unSelected.gif
https://www.pulseuniform.com/WebPict...unSelected.gif
and so on, you need to fix this before we can move forward.