// collapse the items under an argument provided in the function call
function collapse()
{
	for(var i=0; i<arguments.length; i++)
	{
		document.getElementById(arguments[i]).style.display = "none";
	}
}

// expand or collapse the items under the 'object' argument provided in the function call
function expand(object)
{
	var tagobject = document.getElementById(object);
	tagobject.style.display = (tagobject.style.display == "none" ? "" : "none");
}

function mouseAction(swap, targetId) 
{
	var path = "images/template_images/";
	document.getElementById(targetId).src = path + (swap ? "down_arrow_gray.gif" : "down_arrow_white.gif");
}

// pop up window for slideshow
function slideshowPopup(directory, window_width, window_height){
	var slideshow_url="images/slideshows/slideshow.php?directory="+directory;
	var parameters = "width="+window_width+", height="+window_height;
	window.open(slideshow_url, "", parameters);
}