function colorTableBackground ()
{
	var evenColor = "#EFEFEF";
	var oddColor = "#FFFFFF";
	
	var even = false;
	
	var tables = document.body.getElementsByTagName("table");
	var count;
	
	for(count = 0; count < tables.length; count++)
	{
		var currentTable = tables[count];
		
		if(currentTable.getAttributeNode("class") == null)
		{
			var tBodies = currentTable.getElementsByTagName("tbody");
			var i;
			for(i = 0; i < tBodies.length; i++)
			{
				var rows = tBodies[i].getElementsByTagName("tr");
				var j;
				for(j = 0; j < rows.length; j++)
				{
					var tds = rows[j].getElementsByTagName("td");
					var k;
					for(k = 0; k < tds.length; k++)
					{
						if(even)
						{
							tds[k].style.backgroundColor = oddColor;
						}
						else
							tds[k].style.backgroundColor = evenColor;
					}
					even = !even;
				}
				even = false;
			}
		}
	}
}