function toggleCategory(category)
{

	link = document.getElementById(category + "_link");
	if( link )
	{
		var display = "";
		var borderWidth = "";
		if( link.innerHTML == "Show" )
		{
			link.innerHTML = "Hide";
			display = "";
			borderWidth = "1px";
		}
		else
		{
			link.innerHTML = "Show";
			display = "none";
			borderWidth = "0";
		}
		
		eventsTable = document.getElementById("table_events_list");
		
		if( eventsTable )
		{
			for(var i = 0; i < eventsTable.rows.length; i++ )
			{
				if( eventsTable.rows[i].className == category )
				{
					eventsTable.rows[i].style.display = display;
				}

			}
		
		}
		
	}

}