function mtGetObject(name) {
    // DOM, Internet Explorer, Mozilla 
    if (document.getElementById)
      	return document.getElementById(name);
    // Internet Explorer 
    else if (document.all)
    	return document.all[name];
    // Netscape 
    else if (document.layers)
       	return document.layers[name];
    return false;
}

function mtGetEventElement(e) {
    if (e = e ? e : (window.event ? window.event : false)) {
        e = e.target ? e.target : (e.srcElement ? e.srcElement : false);
        while (e.nodeType != 1)
            e = e.parentNode;
    }
    return e;
}

function mtGetEventObject(e) {
    return e ? e : (window.event ? window.event : false);
}

function fHideSubMenu(nSubMenuLength){
	for (var i=0; i<nSubMenuLength; i++)
	{
		var obj = document.getElementById('sub' + i);
		if (obj!=null) {
			obj.style.display = 'none';
			obj.style.visibility = 'hidden';
		}
	}
}

function fShowMenu(strWhat){
	fHideSubMenu(6);
	var obj = document.getElementById(strWhat);
	if (obj!=null) {
		obj.style.display = 'block';
		obj.style.visibility = 'visible';
	}
}