// Functions for toggling 'Overlay' display items

function getFlashMovie(movieName) {
    var isIE = navigator.appName.indexOf("Microsoft") != -1;
    return (isIE) ? window[movieName] : document[movieName];
}


function showOverlay() {	
		
	// Show overlay
	var overlay = document.createElement('div');
	overlay.id = 'overlay';
	overlay.innerHTML = 
		'<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="100%" height="100%">' +
		'<param name="movie" value="player.swf" />' +
		'<param name="wmode" value="transparent" />' +
	    '<!--[if !IE]>-->' +
	    '<object type="application/x-shockwave-flash" data="player.swf" width="100%" heigh="100%">' +
		'<param name="wmode" value="transparent" />' +
	    '</object>' +
	    '<!--<![endif]-->' +
		'</object>';
	document.body.insertBefore(overlay, document.body.firstChild);
	
	// Scroll page to top
	window.scrollTo(0,0);
}

function hideOverlay() {
	
	// Remove overlay
	var flash = document.getElementById('overlay-flash');	
	var overlay = document.getElementById('overlay');
	if (overlay && flash) overlay.removeChild(flash);	
	if (overlay) document.body.removeChild(overlay);	
	
}