// Routines useful for managing the DOM history object
// NOTE: requires browserdetect.js to have been loaded into the web page FIRST!
function isFirstPageInHistoryChain() {
	var initialHistorySize = 1;
	if (BrowserDetect.browser == 'Explorer') {
		initialHistorySize = 0;
	}
	if (history.length <= initialHistorySize) {
		return true;
	} else {
		return false;
	}
}