var intPreviousItem = 0 ;
var intNextNewsID = 1 ;
var intTotalItems = 11;
var strID = 1 ;

    	// change the highlighted item
	// DisplayContent(intNextNewsID) ;


//find next image
function nextImage(o) {
    do o = o.nextSibling;
    while(o && o.tagName != 'IMG');
    return o;
}

//find first image inside an element
function firstChildImage(o) {
    
    o = o.firstChild;
        
    while(o && o.tagName != 'IMG') {
        o = o.nextSibling;
    }
    
    return o;
}

//set the opacity of an element to a specified value
function setOpacity(obj, o) {

    obj.style.opacity = (o / 100);
    obj.style.MozOpacity = (o / 100);
    obj.style.KhtmlOpacity = (o / 100);
    obj.style.filter = 'alpha(opacity=' + o + ')';
}

//make image invisible and set next one as current image
function getNextImage(image) {
	
    if (next = nextImage(image)) {
	image.style.display = 'none';
	image.style.zIndex = 0;

	next.style.display = 'block';
	next.style.zIndex = 105;

    } else {
	//if there is not a next image, get the first image again
	next = firstChildImage(image.parentNode);
    }

    return next;
}

//set default values for parameters and starting image
function blendImages(id, speed, pause, caption) {

    if(speed == null) {
        speed = 30;
    }
    
    if(pause == null) {
        pause = 5000;
    }

    var blend2 = document.getElementById(id);

    var image = firstChildImage(blend2);

    startBlending(image, speed, pause, caption);
}

//make image a block-element and set the caption
function startBlending(image, speed, pause, caption) {

    image.style.display = 'block';

    if(caption != null) {
	document.getElementById(caption).innerHTML = image.alt;
    }

    continueFadeImage(image, 0, speed, pause, caption);
    
    // change the highlighted item
    // only required for news highlighting
    // DisplayContent(intNextNewsID) ;

    
}

// ASC: copied from http://www.sean.co.uk/a/webdesign/javascriptdelay.shtm
function pausecomp(millis) {
    var date = new Date();
    var curDate = null;

    do { curDate = new Date(); }
    while(curDate-date < millis);
} 

//set an increased opacity and check if the image is done blending
function continueFadeImage(image, opacity, speed, pause, caption) {

    opacity = opacity + 3;

    if (opacity < 103) {

	setTimeout(function() {fadeImage(image, opacity, speed, pause, caption)}, speed);
	

    } else {
    
  
	//if the image is done, set it to the background and make it transparent
	image.parentNode.style.backgroundImage = "url("+image.src+")";

	// ASC: pause 1sec here to prevent MSIE image flash ...
	var paws=pause-1000;
	if (paws < 0 ) {
		paws = 0;
	}
	// pausecomp(1000);

	setOpacity(image,0);
	//get the next image and start blending it again
	image = getNextImage(image);
	setTimeout(function() {startBlending(image, speed, pause, caption)}, paws);	
	
	return false ;
    }
}

//set the opacity to a new value and continue the fading
function fadeImage(image, opacity, speed, pause, caption) {
    setOpacity(image,opacity);
    continueFadeImage(image, opacity, speed, pause, caption);
}


function DisplayContent(strID){	
	
	
	if(intPreviousItem!=0) 
	{
		// turn off the previous selection
		
		objButton = getObj("news_" + intPreviousItem) ;
		objButton.className="" ;
	
	}
	// turn on currrent selection
	objButton = getObj("news_" + strID) ;
	objButton.className="selected"	 ;

	
	if(intTotalItems == parseInt(strID)){
		intNextNewsID = 1	
	}else{
		intNextNewsID = parseInt(strID) + 1	
	}		
	intPreviousItem = strID ;
	
	// call summary function
	newssummary(strID) ;	
	
	
}


function getObj(id){
	if(document.getElementById){
		return document.getElementById(id);
	}else{
		return document.all[id];
	} 
}

function newssummary(strID) {

	var xstrID = parseInt(strID)  ;
	
	
	if(xstrID != 0) 
	{
	
	// loop if the loop counter is xstrID turn on otherwise off
	
	
	for (var x = 1; x <= 6; x++)
	   {
	   objText = getObj("summary_" + x) ;
	   
	   if(x == parseInt(strID)) 
	   	{
	   	objText.style.display = 'block';
	   	objText.style.zIndex = 105;
	   	}
	   	else
	   	{
	   	objText.style.display = 'none';
	   	objText.style.zIndex = 0;
	   	}
	   }

	}
}