var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;

function dropdown(id)
{	
	
	cancelclosetime();

	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';

	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';

}

function closedropdown()
{
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}


function closetime()
{
	closetimer = window.setTimeout(closedropdown, timeout);
}


function cancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

function columnHoverOn(column)
{
	document.getElementById(column).style.color = '#000000';
}

function columnHoverOff(column)
{
	document.getElementById(column).style.color = '#4e1456';
	return true;
}