function init_pcs() {
	
	setOpacity(document.getElementById('stage_mask'), 87);
	
}
var user_timer = 0;
var user_status = 0; 

function user_idle () {
	user_status = 0;
	setOpacity(document.getElementById('stage_mask'), 0);
	setOpacity(document.getElementById('stage_body'), 0);
}

function user_away () {
	user_status = -1;
	setOpacity(document.getElementById('stage_header_menu'), 0);
	setOpacity(document.getElementById('stage_header_quicknav'), 0);	
}
function user_active () {
	if (user_status < 1) {
		setOpacity(document.getElementById('stage_body'), 100);
		setOpacity(document.getElementById('stage_header_menu'), 100);
		setOpacity(document.getElementById('stage_header_quicknav'), 100);
		setOpacity(document.getElementById('stage_mask'), 87);
	}
	user_timer = 0;
	user_status = 1;
}
function user_monitor () {
	user_timer++;
	if (user_timer > 240 && user_status != 0) {
		user_idle();
	} else if (user_timer > 360 && user_status != -1) {
		user_away();
	}
	window.setTimeout("user_monitor()", 1000);	
}

window.setTimeout("user_monitor()", 1000);
document.onmousemove = user_active;

window.onload = function() {init()}

function init() {
	init_pcs();
	window.setTimeout("initImage()", 24000);
}

function initImage() {

	imageId = 'slideshow';

	//image = document.getElementById(imageId);

	image = document.getElementById('stage_slideshow');

	//setOpacity(image, 0);

	//image.style.visibility = "visible";
	if (!images[showindex]) { showindex = 0; }
			
	setBackground(image,images[showindex++]);

	//fadeIn(imageId,0);

	window.setTimeout("initImage()", 15000);

}



function setBackground(obj, url) { 
	//obj.src='"'+url+'"'; 
    obj.setAttribute("src", url);
}

function showcaseBackground(obj, url) { 
	//obj.src='"'+url+'"'; 
    setBackground(obj, url);
	setOpacity(document.getElementById('stage_mask'), 0);
	setOpacity(document.getElementById('stage_header_menu'), 0);
	setOpacity(document.getElementById('stage_header_quicknav'), 0);
}

function setOpacity(obj, opacity) {

	opacity = (opacity == 100)?99.999:opacity;

	// IE/Win

	obj.style.filter = "alpha(opacity:"+opacity+")";

	// Safari<1.2, Konqueror

	obj.style.KHTMLOpacity = opacity/100;

	// Older Mozilla and Firefox

	obj.style.MozOpacity = opacity/100;

	// Safari 1.2, newer Firefox and Mozilla, CSS3

	obj.style.opacity = opacity/100;

}