var agt=navigator.userAgent.toLowerCase();

var is_ie = ((agt.indexOf("msie") != -1) && (agt.indexOf("opera") == -1));

var closeTimer = null;
var closeMenuVar = null;

function findPosX(obj)
{
	var curleft = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curleft += obj.offsetLeft
			obj = obj.offsetParent;
		}
	}
	else if (obj.x)
		curleft += obj.x;
	
	if (is_ie)
		curleft += 10;
	
	return curleft;
}

function findPosY(obj)
{
	var curtop = 0;
	if (obj.offsetParent)
	{
		while (obj.offsetParent)
		{
			curtop += obj.offsetTop
			obj = obj.offsetParent;
		}
	}
	else if (obj.y)
		curtop += obj.y;
	return curtop;
}

function openMenu (id, src) {
	
	StopTimer(id);
	
	var menu = document.getElementById(id);
	
	
	var top = findPosY(src) + 14;
	var left = findPosX(src) - 4;
	
	menu.style.top = top + "px";
	menu.style.left = left + "px";
	menu.style.display = 'block';
	
	//alert("top: " + top + "; left: " + left + "; mtop: " + menu.offsetTop + "; mleft: " + menu.offsetLeft);
}


function closeMenu (id) {

	if (id != closeMenuVar && closeMenu)
		doCloseMenu();
	
	closeMenuVar = id;
	StartTimer();

}


function doCloseMenu () {

	if (closeMenuVar) {
		var menu = document.getElementById(closeMenuVar);
		menu.style.display = 'none';
	}
	closeMenuVar = null;
}

function StartTimer() {
	closeTimer = setTimeout("doCloseMenu()", 500);
}

function StopTimer(id) {

	if (closeTimer)
	{
		if (id != closeMenuVar)
			doCloseMenu();
		clearTimeout(closeTimer);
	}
	
	closeTimer = null;
	
}