function HideSessionDescriptions()
{
    var divs = document.getElementsByTagName("div");
    
    for (i = 0; i < divs.length; i++)
    {
        if (divs[i].className == "SessionDescription")
            divs[i].style.display = "none";
    }
}
function ShowSessionDescription(obj, id)
{
    var description = document.getElementById(id);
    if (description == null)
        return;
    description.style.display = "";

    var width = description.offsetWidth;
    var top = (FindPosY(obj) + obj.offsetHeight) + 4;
    var left = (FindPosX(obj) + obj.offsetWidth);
    
    if ((left - width) > 0)
        left -= width;
    else
        left = 2;

    description.style.top = top + "px";
    description.style.left = left + "px";
}
function FindPosX(obj)
{
	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;
	return curleft;
}
function FindPosY(obj)
{
	var curtop = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;
	return curtop;
}

imgPlus = new Image();
imgPlus.src = "http://konference.navigent.dk/images/plus.gif"; 
imgMinus = new Image();
imgMinus.src = "http://konference.navigent.dk/images/minus.gif"; 
function toggle(id) {
	var pane = document.getElementById("pane" + id);
	if (pane.style.display == 'none') {
		document.getElementById("toggle" + id).src = imgMinus.src;
		pane.style.display = 'block';
	} else {
		document.getElementById("toggle" + id).src = imgPlus.src;
		pane.style.display = 'none';
	}
}