// not animated collapse/expand
function togglePannelStatus(content)
{
    var expand = (content.style.display=="none");
    content.style.display = (expand ? "block" : "none");
    toggleChevronIcon(content);
}

// current animated collapsible panel content
var currentContent = null;

function togglePannelAnimatedStatus(content, interval, step)
{
    // wait for another animated expand/collapse action to end
    
    if (currentContent==null)
    {
        currentContent = document.getElementById(content);
        cont = document.getElementById(content);
        var expand = (cont.style.display=="none");
        if (expand)
            cont.style.display = "block";
        var max_height = cont.offsetHeight;
	
        var step_height = step + (expand ? 0 : -max_height);
        toggleChevronIcon(cont);
                
        // schedule first animated collapse/expand event
        cont.style.height = Math.abs(step_height) + "px";
        setTimeout("togglePannelAnimatingStatus(" + interval + "," + step
            + "," + max_height + "," + step_height + ")", interval);
    }
}

function togglePannelAnimatingStatus(interval, step, max_height, step_height)
{
    var step_height_abs = Math.abs(step_height);

    // schedule next animated collapse/expand event
    if (step_height_abs>=step && step_height_abs<=(max_height-step))
    {
        step_height += step;
        currentContent.style.height = Math.abs(step_height) + "px";
        setTimeout("togglePannelAnimatingStatus(" + interval + "," + step
            + "," + max_height + "," + step_height + ")", interval);
    }
    // animated expand/collapse done
    else
    {
        if (step_height_abs<step)
            currentContent.style.display = "none";
        currentContent.style.height = "";
        currentContent = null;
       
    }
}

// change chevron icon into either collapse or expand
function toggleChevronIcon(content)
{
	
	if(content.id == "sfsp"){
		if(document.getElementById("qryBtn").className =="fyrirOpenBtn"){
				document.getElementById("qryBtn").className = "fyrirOpenBtnOn";
		}else{
			 document.getElementById("qryBtn").className ="fyrirOpenBtn";
		}
	};
	if(content.id == "sp"){
		if(document.getElementById("spBtn").className =="spOpenBtn"){
				document.getElementById("spBtn").className = "spOpenBtnOn";
		}else{
			 document.getElementById("spBtn").className ="spOpenBtn";
		}
	};
	

  /*  var chevron = content.parentNode.firstChild.childNodes[1].childNodes[0];
    var expand = (chevron.src.indexOf("expand.gif")>0);
    chevron.src = chevron.src
        .split(expand ? "expand.gif" : "collapse.gif")
        .join(expand ? "collapse.gif" : "expand.gif");*/
}