window.onload = function () {
		// focus on the input field for easy access...
		if (document.getElementById('book_keywords')) {
			var input = document.getElementById ('book_keywords');
		}
		else if (document.getElementById('audio_searchargs')) {
			var input = document.getElementById ('audio_searchargs');
		}
		else if (document.getElementById('inputbox')) {
			var input = document.getElementById ('inputbox');
		}
		else if (document.getElementById('searchterm')) {
			var input = document.getElementById ('searchterm');
		}
		
		input.focus ();
		
		// ...but if someone wishes to go back in their history, let them!
		document.onkeydown = function (e) {
			if (!e) {
				var e = window.event;
			}
			if (e.keyCode === 8 && !input.value) {
				history.back();
			}
		};
	};