function openSubMenu(mainMenuItem, subMenu)
{
    subMenu = document.getElementById(subMenu);
    subMenu.style.left = mainMenuItem.offsetLeft + "px";
    if(subMenu.interval != null)
        clearInterval(subMenu.interval);
    subMenu.style.display = "block";
    new Silk(subMenu, "opacity", null, 0, null, 1, null);
    new Silk(subMenu, "opacity", null, 1, null, 0.2, function()
    {
        subMenu.interval = setInterval(function()
        {
            new Silk(subMenu, "opacity", null, 0, null, 0.01, function()
            {
                subMenu.style.display = "none";
                clearInterval(subMenu.interval);
                subMenu.interval = null;
            });
        }, 500);
    });
}
function subscribe()
{
	if(document.getElementById("subscribe_name").value == "")
	{
		alert("Please enter your name");
		return false;
	}
	else if(document.getElementById("subscribe_email").value == "")
	{
		alert("Please enter your email");
		return false;
	}
	return true;
}
function tryOpen()
{
    window.open("try.php", "_blank", "width=270,height=240,toolbar=no,titlebar=no,status=no,resizable=no,menubar=no,location=no,directories=no");
}
function seminarsOpen()
{
    window.open("seminars-interest.php", "_blank", "width=270,height=510,toolbar=no,titlebar=no,status=no,resizable=no,menubar=no,location=no,directories=no");
}
function referralsOpen()
{
    location.href = "http://www.csiarbitrage.com.au/?section=Company&page=Referrals";
}