// Messages item struc
function MessageItem( iMessageTypeID, sLinkURL, sGraphicURL, sGraphicAltText, iDisplayTime, sMessageText )
{
	this.MessageTypeID 	= iMessageTypeID;
	this.LinkURL 	    = sLinkURL;
	this.GraphicURL 	= sGraphicURL;
	this.GraphicAltText = sGraphicAltText;
	this.DisplayTime 	= iDisplayTime;
	this.MessageText 	= sMessageText;
}

// News item struc
function NewsItem( iNewsID, sTitle, sLocation )
{
	this.NewsID 	= iNewsID;
	this.Title 	    = sTitle;
	this.Location   = sLocation;
}

// Array to hold message data
var aMessageArray = new Array( new MessageItem( 3,' ',' ',' ',-1,' '));

// Array to hold news data
var aNewsArray = new Array( new NewsItem( 25170,'Police appeal for witnesses after BT cable theft','Yeovil'),
new NewsItem( 25169,'Residents invited to chat with local police sergeant online','Portishead'),
new NewsItem( 25168,'Drug dealer ordered to pay back ill gotten gains','Hartcliffe'),
new NewsItem( 25167,'Two men jailed for sexual offences','Bristol'),
new NewsItem( 25166,'Appeal to find owner of property','Bleadon'));

// Ticker functions
var iCurrentIndex = 0;
var bGoTicker = true;
var bStopTicker = false;
// References to page objects
var oAnchor;
var oTickerArea;

function GoTicker()
{
    if ( !bStopTicker  )
    { // If ticker isn't stopped

        // alert('GoTicker()');
        if ( !bGoTicker ) return false;

        // Reference objects in use
        if ( oAnchor == null )
        {
            // Load cookie message array
            if ( getCookie('CurrentTickerID') != null )
                iCurrentIndex = parseInt( getCookie('CurrentTickerID') );

            // Load cookie news array
            if ( getCookie('CurrentNewsID') != null )
                iCurrentNewsIndex = parseInt( getCookie('CurrentNewsID') );

            if ( document.getElementById )
            {
                oAnchor         = document.getElementById('PageTickerAnchor');
                oTickerArea     = document.getElementById('TickerArea');
            }
        }

        // Safe guard
        if ( iCurrentIndex > aMessageArray.length - 1 )
            iCurrentIndex = 0;

        // Determine message type
        switch( aMessageArray[ iCurrentIndex ].MessageTypeID )
        {
            case 1: // Text message
                oAnchor.innerHTML   = aMessageArray[iCurrentIndex].MessageText;
                oAnchor.href        = aMessageArray[iCurrentIndex].LinkURL;

                // Display message for X seconds
                setTimeout('NextMessage()', parseInt( aMessageArray[iCurrentIndex].DisplayTime ) * 1000 );
                break;
            case 2: // Graphic message
                oAnchor.innerHTML   = '<img border="0" src="' + aMessageArray[iCurrentIndex].GraphicURL + '" alt="' + aMessageArray[iCurrentIndex].GraphicAltText + '" /> ' + aMessageArray[iCurrentIndex].MessageText;
                oAnchor.href        = aMessageArray[iCurrentIndex].LinkURL;

                // Display message for X seconds
                setTimeout('NextMessage()', parseInt( aMessageArray[iCurrentIndex].DisplayTime ) * 1000 );
                break;
            case 3: // News
                // oAnchor.innerHTML   = '<h2>News.....</h2>';
                // setTimeout('NextMessage()', 5000 );
                GoNewsMessage();
                break;
        }

    } // END bStopTicker
}

// News ticker
var iCurrentNewsIndex = 0;
var iCurrentNewsChar = 0;

// Display news message
function GoNewsMessage()
{
    if ( !bStopTicker )
    { // If ticker isn't stopped

        // Safe guard
        if ( iCurrentNewsIndex > aNewsArray.length - 1 )
            iCurrentNewsIndex = 0;

	   // Display the next part of the news story
	   var sArrayStoryText = aNewsArray[ iCurrentNewsIndex ].Title + ' (' + aNewsArray[ iCurrentNewsIndex ].Location + ')';
	   var sHref           = '/newsroom/ViewStory.aspx?nsid=' + aNewsArray[ iCurrentNewsIndex ].NewsID;
	   oAnchor.href        = sHref;

	   if ( iCurrentNewsChar > sArrayStoryText.length ){
		  // Pause story - Ready next one
            iCurrentNewsChar = 0;

		  if ( iCurrentNewsIndex >= aNewsArray.length - 1 )
		  { // End of news messages
		      iCurrentNewsIndex = 0;
		      setTimeout("NextMessage()", 5000);
		  }
		  else
		  { // Move to next news message
			 iCurrentNewsIndex++;
			 setTimeout("GoNewsMessage()", 5000);
		  }

		  // Save current news story
		  setCookie('CurrentNewsID', iCurrentNewsIndex, '', '/', '', false );

	   } else {
		  // Display
		  var sStoryText = sArrayStoryText.substring( 0, iCurrentNewsChar );
		  iCurrentNewsChar++;

		  oAnchor.innerHTML = '<b>Latest news:</b> ' + sStoryText + '_'; // Display the text
		  // oTickerArea.innerHTML = '<a href="' + sHref + '" class="help_and_contents_links"><b>Latest news:</b> ' + sStoryText + '_</a>'; // Display the text

		  setTimeout("GoNewsMessage()", 75 );
	   }

    } // END bStopTicker
}

// Move to the next message in the ticker
function NextMessage()
{
    //  alert('NextMessage()' );

    if ( iCurrentIndex >= ( aMessageArray.length - 1 ) ){
		iCurrentIndex = 0;
	} else {
		iCurrentIndex++;
	}
	iCurrentChar = 0;

    // Save current message mode
    // setCookie('CurrentTickerID', iCurrentIndex);
    // setCookie('CurrentTickerID', iCurrentIndex, new Date().getTime(), '/', '', false );
    setCookie('CurrentTickerID', iCurrentIndex, '', '/', '', false );

	GoTicker();
}

// Stop the ticker
function StopTicker()
{
    bStopTicker = true;
}