var plus = "http://media.corporate-ir.net/media_files/irol/70/70972/plus.gif";
var minus = "http://media.corporate-ir.net/media_files/irol/70/70972/minus.gif";

function toggle(section)
{
    var item = document.getElementById(section);
    var image = document.getElementById(section + "img");
	
    if(item.style.display == "none")
    {
	item.style.display = "block";
	image.src = minus;
    }
    else
    {
	item.style.display = "none";
	image.src = plus;	
    }
}