function switchMenu(obj)
{
    var el = document.getElementById(obj);
    var el_img = document.getElementById(obj + "_img");

	if(el.style.display != "block") {
        el_img.src = "/images/minus.gif";
        el.style.display = "block";

	} else {
        el_img.src = "/images/plus.gif";
        el.style.display = "none";
	}
}

function expandMenu(obj)
{
    var el = document.getElementById(obj);
    var el_img = document.getElementById(obj + "_img");

	if(el.style.display != "block") {
        el_img.src = "/images/minus.gif";
        el.style.display = "block";
	}
}

function openPopup(url, width, height, windowName) {
	width = width || screen.availWidth - 50;
	height = height || screen.availHeight - 50;
	windowName = windowName || '';
    var w = window.open(url, windowName, 'width=' + width + ',height=' + height + ',dependent=1,resizable=1,scrollbars=1,toolbar=1,location=1,status=1,menubar=1');
    if (w)
    	w.focus();
    return false;
}