function showTabs(id) {
	var elems = document.getElementById('tabs').getElementsByTagName('div');
	for (var i=0; i<elems.length; i++)
	{
	   elems[i].style.display = "none";
	}
	document.getElementById(id).style.display = 'block';
	//document.getElementsByTagName('ul').getElementById('a').class = 'selected';	
}
function displayElem(parent, tag, id) {
	// fetch and loop through all tags in the parent container
	var elems = document.getElementById(parent).getElementsByTagName(tag);
	for (var i=0; i<elems.length; i++)
	{
	   elems[i].style.display = "none";
	}
	document.getElementById(id).style.display = 'block';
}
function fadeIn(elem) {
	var speed = Math.round(330 / 10); 
	var timer = 0;
	for (i=0; i<=100; i++) 
	{ 
		setTimeout("changeOpacity("+i+",'"+elem+"')", (timer * speed)); 
		timer++;
	}
}
function changeOpacity(opacity, elem) { 
	var object = document.getElementById(elem).style; 
	object.opacity = (opacity / 100); 
	object.MozOpacity = (opacity / 100); 
	object.KhtmlOpacity = (opacity / 100); 
	object.filter = "alpha(opacity="+opacity+")"; 
}
function blendImage(divid, imageid, imagefile, millisec) 
{ 
	var speed = Math.round(millisec / 10); 
	var timer = 0; 

	//set the current image as background 
	document.getElementById(divid).style.backgroundImage = "url(" + document.getElementById(imageid).src + ")"; 

	//make image transparent 
	changeOpacity(0, imageid); 

	//make new image 
	document.getElementById(imageid).src = imagefile;

	//fade in image 
	for(i = 0; i <= 100; i++) 
	{ 
		setTimeout("changeOpacity(" + i + ",'" + imageid + "')",(timer * speed)); 
		timer++; 
	} 
} 
function runSlideShow(divid, imageid, imageFiles, displaySecs) 
{ 
	var slideCache = new Array(); 
	var imageSeparator = imageFiles.indexOf(";"); 
	var nextImage = imageFiles.substring(0, imageSeparator); 

	changeOpacity(0, imageid); 
	blendImage(divid, imageid, nextImage, 100); 

	var futureImages= imageFiles.substring(imageSeparator+1, imageFiles.length)+ ';' + nextImage; 
	setTimeout("runSlideShow('"+divid+"','"+imageid+"','"+futureImages+"',"+displaySecs+")",displaySecs*1000);

	// Cache the next image to improve performance. 
	imageSeparator = futureImages.indexOf(";"); 
	nextImage = futureImages.substring(0, imageSeparator); 
	if (slideCache[nextImage] == null) 
	{ 
		slideCache[nextImage] = new Image; 
		slideCache[nextImage].src = nextImage; 
	} 
}
function showHide(elem)
{
	if (document.layers)
	{
		current = (document.layers[elem].display == 'none') ? 'block' : 'none';
		document.layers[elem].display = current;
	}
	else if (document.all)
	{
		current = (document.all[elem].style.display == 'none') ? 'block' : 'none';
		document.all[elem].style.display = current;
	}
	else if (document.getElementById)
	{
		vista = (document.getElementById(elem).style.display == 'none') ? 'block' : 'none';
		document.getElementById(elem).style.display = vista;
	}
}