function copyright(){
	document.write("<font size=1 class=copyright>&copy; Hong Kong Stanley International Dragon Boat Championships<br><a href=\"http://www.dragonboat.org.hk\" target=\"_blank\" class=whitelink>www.dragonboat.org.hk</a></font>");
}

function closeWindow(){
	document.write("<font size=1><a href=\"javascript:self.close();\" class=whitelink>close</a></font>");
}

function IsNumeric(strString)
//  check for valid numeric strings
{
	var strValidChars = "0123456789.-";
	var strChar;
	var blnResult = true;

	if (strString.length == 0) return false;

	//  test strString consists of valid characters listed above
	for (i = 0; i < strString.length && blnResult == true; i++)
	{
		strChar = strString.charAt(i);
		if (strValidChars.indexOf(strChar) == -1)
		{
			blnResult = false;
		}
	}
	return blnResult;
}

function Mod(a, b) { return a-Math.floor(a/b)*b }

function Div(a, b) { return Math.floor(a/b) }