As most if not all of those are background images, you can use the page body id in conjunction with the element class/id to set different heading tile images on different pages. It may or may not be simple, depending on exactly which pages you want to be different.

.leftBoxHeading {background: #000000 url(../images/tile_back2.gif) repeat-x;}
#login .leftBoxHeading {background: #ff0000 url(../images/tile_back3.gif) repeat-x;}