/* Functions to add highlighting to centre names when spots are clicked. */

function changeColour(anchorName,colour)
{
	var anchor = document.getElementById(anchorName);
	anchor.style.background = colour;
}

function addColour(href)
{
	var re = /\#/;
	var hrefString
	if (href == null)
	{
		hrefString = location.href;
	}
	else
	{
		hrefString = href;
		var tableCells = document.getElementsByTagName("td");
		for (i = 0; i < tableCells.length; i++) 
		{
			if (tableCells[i].style.background == "yellow") 
			{
				tableCells[i].style.background = "#b4bcc6";
			}
		}
	}
	if (re.test(hrefString))
	{
		var bits = hrefString.split("#");
		var anchorName = bits[1];
		if (anchorName != "")
		{
			var anchorName2 = anchorName + "2";
			var anchorName3 = anchorName + "3";
			
			anchorName += "1";
			
			changeColour(anchorName,"yellow");
			changeColour(anchorName2,"yellow");
			changeColour(anchorName3,"yellow");
			
		}
	}
}