// -------------------------------------------------------------
// cross-browser helper functions
// -------------------------------------------------------------

// Global variables
var isCSS 			= false;
var isW3C 			= false;
var isIE4 			= false;
var isNN4 			= false;
var isIE6 			= false;
var isGecko 		= false;
var isOpera 		= false;
var isDHTML 		= false;
var suppressMenus	= false;
var legacyMode		= false;
var timerID			= null;
var subtimerID		= null;

// initialize upon load to let all browsers establish content objects
function autoconfig()
{
    if(document && document.images)
    {
        isCSS		= (document.body && document.body.style) ? true : false;
        isW3C		= (isCSS && document.getElementById) ? true : false;
        isIE4		= (isCSS && document.all && readIEVer() >= 4.0) ? true : false;
        isNN4		= (document.layers) ? true : false;
        isGecko		= (isCSS && navigator && navigator.product && navigator.product == "Gecko");
        isOpera		= (isCSS && navigator.userAgent.indexOf( "Opera") != -1 );
		isIE6CSS	= (document.compatMode && document.compatMode.indexOf("CSS1") >= 0) ? true : false;
		isIE6		= ( isIE6CSS && readIEVer() >= 6.0 );
        isDHTML		= isCSS && ( isIE4 || isGecko || isOpera );
        
        if( suppressMenus || ( isOpera && readOperaVer() < 7 ) || ( isGecko && navigator.productSub <= 20011022 ) || ( isGecko && navigator.productSub == 20030107 ) )
        {
			// Opera 6.x doesn't seem to like the DHTML...
			// Netscape 6.2 puts the menus in the wrong place...
			// Safari, the menus don't go away... problem in ResetMenu
			isDHTML	= false;
        }
    }
}

function readIEVer()
{
	var agent	= navigator.userAgent;
	var offset	= agent.indexOf( "MSIE" );
	if( offset < 0 )
	{
		return 0;
	}
	return parseFloat( agent.substring( offset + 5, agent.indexOf( ";", offset ) ) );
}

function readOperaVer()
{
	var agent	= navigator.userAgent;
	var offset	= agent.indexOf( "Opera" );
	if( offset < 0 )
	{
		return 0;
	}
	return parseFloat( agent.substring( offset + 6 ) );
}

// -------------------------------------------------------------
// client-side masthead
// -------------------------------------------------------------

var m_pnlinks;
var m_crumbs;
var m_mhFixed		= false;
var m_isHome		= false;
var m_isSegHome		= false;
var m_mda			= null;
var m_printLink		= null;
var m_emailLink		= false;
var m_production	= true;



function writeMH( phoneTitle, phoneMsg, phoneTariff, segmentTitle, hasLocale, logoLink, pnmsg )
{
	autoconfig();

	if( !m_production && typeof(m_menuBar) == "undefined" )
	{
		document.write( "<div class=\"para\" style=\"color:red; font-weight:bold\">There is a problem with the menu definition. " );
		document.write( "<a href=\"" + m_menudef + "\">Click here to view</a></div>" );
		
		return;
	}
	
	m_mhFixed	= true;

	document.writeln( "<a name=\"mastheadtop\"></a>" );
	
	

	if( phoneTitle || phoneMsg )
	{
		document.write( "<span class=\"mhTextEmph\">" );
		
		if( phoneTitle )
		{
			document.write( phoneTitle );
			document.write( " " );
		}

		if( phoneMsg )
		{
			document.write( phoneMsg );
		}
			
		document.write( "</span>" );
	}
	
	if( phoneTariff )
	{
		document.write( "<span class=\"mhTextTrf\"> " + phoneTariff + "</span>" );
	}	
	
}