var x;
function showmenu(myid,curleft)
{x=0;
if (myid=="nav1")
{	
	invmenu.style.visibility="visible";
	invmenu.style.top=228;
	x=curleft+155;
	invmenu.style.left=x;
}
else if (myid=="nav2")
{	
	retmenu.style.visibility="visible";
	retmenu.style.top=256;
	x=curleft+155;
	retmenu.style.left=x;
}
else if (myid=="nav3")
{	
	insmenu.style.visibility="visible";
	insmenu.style.top=284;
	x=curleft+155;
	insmenu.style.left=x;
}
}
function remmenu(msg)
{
	if (msg=="nav1")
	{
		invmenu.style.visibility="hidden";	
	}
	else if (msg=="nav2")
	{
		retmenu.style.visibility="hidden";	
	}
	else if (msg=="nav3")
	{
		insmenu.style.visibility="hidden";	
	}		
}


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;
	return curleft;
}