//----------------------------------------------------------------------
// FUNCTION: Housekeeping
//----------------------------------------------------------------------
function houseKeeping() {
	checkBrowser();
}

//----------------------------------------------------------------------
// FUNCTION: Center the splah page vertically in the browser window
//----------------------------------------------------------------------
function centerPage() {
/*  Yuck - using Javascript to center page vertically (because the CSS -ve margin-top method breaks the scrollbar.)  */
	var a = window.getHeight();
	if (a>=577) {
		var marginT = Math.round( ((a - 575) / 2)-1 );
		var style = '<style type="text/css">'
				+ '#wrapper {margin:' + marginT + 'px auto;}'
				+ '</style>';
		document.write(style);
	}
}

//---------------------------------------------------------------------------
//  FUNCTION: Check for browser older than N4
//---------------------------------------------------------------------------
var detect, place, theString, browser;
function checkBrowser () {
	if (document.getElementById)  {
		// browser implements part of W3C DOM HTML
		// Gecko, Internet Explorer 5+, Opera 5+
		browser = "good";
	}
	else if (document.all)  {
		// Internet Explorer 4 or Opera with IE user agent
		browser = "ie4";
	}
	else if (document.layers) {
		// Navigator 4
		browser = "net4";
		location.href = "oldbrowser.html";
	}
	
	detect = navigator.userAgent.toLowerCase();

	var version = 99;
	if (checkIt('msie')) { // browser is IE
		version = detect.charAt(place + theString.length);
		if (checkIt('mac'))
			location.href = "maciebrowser.html";
		if (version < 6)
			location.href = "oldbrowser.html";
	}
}
function checkIt(string) {
	place = detect.indexOf(string) + 1;
	theString = string;
	return place;
}

//----------------------------------------------------------------------
// FUNCTION: Open a new window
//----------------------------------------------------------------------
function targetBlank (url) {
  blankWin = window.open(url,'_blank','menubar=yes,toolbar=yes,location=yes,directories=yes,fullscreen=no,titlebar=yes,hotkeys=yes,status=yes,scrollbars=yes,resizable=yes');
}

//----------------------------------------------------------------------
// FUNCTION: addresses
//----------------------------------------------------------------------