var inMenu = 0, inLink = 0, hideTimer = 0;

function xstooltip_show(tooltipId, parentId, posX, posY)
{
	if(!posX)
		posX = 0;
	if(!posY)
		posY=0;
    it = document.getElementById(tooltipId);
    
    if ((it.style.top == '' || it.style.top == 0) 
        && (it.style.left == '' || it.style.left == 0))
    {
        // need to fixate default size (MSIE problem)
        it.style.width = it.offsetWidth + 'px';
        it.style.height = it.offsetHeight + 'px';
        
        // img = document.getElementById(parentId); 
	img = parentId;
  	if(img) {  
        // if tooltip is too wide, shift left to be within parent 
        	if (posX + it.offsetWidth > img.offsetWidth) posX = img.offsetWidth - it.offsetWidth;
        	if (posX < 0 ) posX = 0; 
        	x = xstooltip_findPosX(img) + posX;
        	y = xstooltip_findPosY(img) + posY;
        }
	else {
		x = posX;
		y = posY;
	}
        it.style.top = y + 'px';
        it.style.left = x + 'px';
    }
    
    it.style.visibility = 'visible'; 
}

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

function xstooltip_hide(id)
{
    it = document.getElementById(id); 
    if((inMenu == 0) && (inLink == 0))
    	it.style.visibility = 'hidden'; 
    hideTimer = 0;
}

function menuOut()
{
	inMenu = 0;
	if(! hideTimer)
		hideTimer = setTimeout('xstooltip_hide("mainMenu")',500);	
}

function linkOut()
{
	inLink = 0;
	if(! hideTimer)	
		hideTimer = setTimeout('xstooltip_hide("mainMenu")',500);	
}

function menuIn()
{
	inMenu = 1;
}


function startUp()
{
	var ulArray = YAHOO.util.Dom.getElementsByClassName("mainlevel-nav","span");
	if(!ulArray)
		return;	
	var aa = ulArray[0];
	if(!aa)
		return;
	aa.onmouseover = function() { xstooltip_show("mainMenu",aa,0,15); return true; };
	aa.onmouseout = function() { linkOut(); };
}