var historyCurrentDiv	= "history_content_2010";
		var historyCurrentLi	= "history_item_2010";
		
		function historyInit() {
			var div = document.getElementById(historyCurrentDiv);
			div.style.display = "block";
			
			var li = document.getElementById(historyCurrentLi);
			li.className = "current";
		}
		
		function historySwitchTo(object) {
			var nextDiv	= "history_content_" + object.innerHTML;
			var nextLi	= "history_item_" + object.innerHTML;
			
			var div = document.getElementById(nextDiv);
			div.style.display = "block";

			var li = document.getElementById(nextLi);
			li.className = "current";
			
			div = document.getElementById(historyCurrentDiv);
			div.style.display = "none";

			li = document.getElementById(historyCurrentLi);
			li.className = "";
			
			historyCurrentDiv	= nextDiv;
			historyCurrentLi	= nextLi;
		}