timer = 0;

function mail(first, last)
{
	document.write('<area shape=\"rect\" alt=\"Make an enquiry via email\" coords=\"531,129,760,155\" href=\"mail' + 'to:' + first + '@' + last + '\">');
}

function getY(element)
{
	var iReturnValue = 0;
	while(element != null)
	{
		iReturnValue += element.offsetTop;
		element = element.offsetParent;
	}
	return iReturnValue;
}

function openSubnav(id,element)
{
	clearTimeout(timer);

	navBox = document.getElementById('sailingLessons');
	navBox.style.display = "none";
	navBox = document.getElementById('shorebasedCourses');
	navBox.style.display = "none";

	navBox = document.getElementById(id);
	navBox.style.display = "block";
	navBox.style.top = (getY(element)+10) + "px";
}

function keepOpen(id)
{
	clearTimeout(timer);
	navBox = document.getElementById(id);
	navBox.style.display = "block";
}

function closeSubnav(id)
{
	clearTimeout(timer);
	navBox = document.getElementById(id);
	navBox.style.display = "none";
}


function autoCloseSubnav(id)
{
	timer = setTimeout("closeSubnav('"+id+"')", 1000);
}