// canManipulateImages - check if the browser we're using can do
			// clever stuff with document images.

				function canManipulateImages() {
					if (document.images)
					return true;
					else
					return false;
				}

			// loadPosterImage

				function loadPosterImage(imageURL) {
					if (gImageCapableBrowser) {
						document.imagePoster.src = imageURL;
						return false;
					}
					else {
						return true;
					}
				}

			// gImageCapableBrowser - is this browser hip to images? Set up
			// a global variable so that we don't have to keep calling a function
			// (useful if the function becomes costly to compute).
				gImageCapableBrowser = canManipulateImages();