var active_menu = '';

function toggle_menu(obj,img) {
    if (obj.style) {
        if (obj.style.backgroundImage) {
            obj.style.backgroundImage = 'URL(' + img + ')';
        }
    }
    return false;
}

function toggle_childmenu(sobj,state) {
    if (active_menu.length > 0) {
        if (document.getElementById) {
            var obj = document.getElementById(active_menu);
            if (obj) {
                obj.style.visibility = 'hidden';
                active_menu = '';
            }
        }
    }
    if (sobj.length > 0) {
		mstate = (state=='visible')?'hidden':'visible';
        if (document.getElementById) {
            var obj = document.getElementById(sobj);
            if (obj) {
                obj.style.visibility = state;
                active_menu = sobj;
            }
        }
	var mobj = document.getElementById('HideDrops');
	if (mobj){
		mobj.style.visibility = mstate;
	}
    }
}