function closeMenus(menuId) {
	var allDivs = document.getElementsByTagName('div');
	var menuId = ''+menuId;
	for (var i=0;i<allDivs.length;i++) {
		if ((allDivs[i].id.substring(0,4)=='menu')&&(menuId.indexOf(allDivs[i].id.substring(4))==-1)&&(allDivs[i].id!='menuContainer') &&(allDivs[i].id!='menuDiv') &&(allDivs[i].id!='menuTd')) {
			// hide unused menu parts
			allDivs[i].style.display = "none";
		}
	}
}

function openMenu(menuId) {
	closeMenus(menuId);
	if (document.getElementById('menu'+menuId)) {
		document.getElementById('menu'+menuId).style.position = 'absolute';
		document.getElementById('menu'+menuId).style.left = (findPosX(document.getElementById('button'+menuId))+5)+"px";
		document.getElementById('menu'+menuId).style.top =  (findPosY(document.getElementById('button'+menuId))+20)+"px";
		document.getElementById('menu'+menuId).style.display = "";
	}
}


function openSubMenu(menuId) {
	closeMenus(menuId);
	if (document.getElementById('menu'+menuId)) {
		document.getElementById('menu'+menuId).style.position = 'absolute';
		document.getElementById('menu'+menuId).style.left = (findPosX(document.getElementById('img'+menuId))+10)+"px";
		document.getElementById('menu'+menuId).style.top =  (findPosY(document.getElementById('img'+menuId))+5)+"px";
		document.getElementById('menu'+menuId).style.display = "";
	}
}