var _menuUp = null;

function Browse(menu) {
    if (menu == _menuUp) {
        GE(menu.id + "Menu").style.display = "none";
        menu.className = "TopMenu";
        _menuUp = null;
    } else {
        if (_menuUp != null) {
            GE(_menuUp.id + "Menu").style.display = "none";
            _menuUp.className = "TopMenu";
        }
            
        GE(menu.id + "Menu").style.display = "block";
        menu.className = "TopMenuSelected";  
        _menuUp = menu;  
    }        
}

function GE(id) {
    return document.getElementById(id);
}


var divLoading = null;

function PositionDivLoading() {

    if (divLoading == null)
        return;
        
    var posX = ((f_clientWidth() - 200) / 2) + f_scrollLeft();
    var posY = ((f_clientHeight() - 100) / 2) + f_scrollTop();
    
    divLoading.style.left = posX + "px";
    divLoading.style.top = posY + "px";
}

function f_clientWidth() {
	return f_filterResults (
		window.innerWidth ? window.innerWidth : 0,
		document.documentElement ? document.documentElement.clientWidth : 0,
		document.body ? document.body.clientWidth : 0
	);
}
function f_clientHeight() {
	return f_filterResults (
		window.innerHeight ? window.innerHeight : 0,
		document.documentElement ? document.documentElement.clientHeight : 0,
		document.body ? document.body.clientHeight : 0
	);
}
function f_scrollLeft() {
	return f_filterResults (
		window.pageXOffset ? window.pageXOffset : 0,
		document.documentElement ? document.documentElement.scrollLeft : 0,
		document.body ? document.body.scrollLeft : 0
	);
}
function f_scrollTop() {
	return f_filterResults (
		window.pageYOffset ? window.pageYOffset : 0,
		document.documentElement ? document.documentElement.scrollTop : 0,
		document.body ? document.body.scrollTop : 0
	);
}
function f_filterResults(n_win, n_docel, n_body) {
	var n_result = n_win ? n_win : 0;
	if (n_docel && (!n_result || (n_result > n_docel)))
		n_result = n_docel;
	return n_body && (!n_result || (n_result > n_body)) ? n_body : n_result;
}