//=============================================================================
	var historyList = [];
	var historyScroll = [];
	function setHistory(url) {
		if (historyList.length == 0) {
			historyList[historyList.length] = url;
		}
		else {
			pos = historyList.indexOf(url);
			if (pos == -1) {
				historyList[historyList.length] = url;
				frames[0].scrollTo(0,0);
			}
			else if (pos == historyList.length-2) {
				historyList.length--;
				frames[0].scrollTo(0,historyScroll[historyList.length-1]);
			}
			else {
				historyList.length = pos+1;
				frames[0].scrollTo(0,0);
			}
		}
	}

    function saveScroll() {
		if (historyList.length > 0) {
			var sTop = frames[0].pageYOffset || frames[0].document.documentElement.scrollTop || frames[0].document.body.scrollTop;
			historyScroll[historyList.length-1] = sTop;
		}
//		alert("saveScroll:"+(historyList.length-1)+"->"+historyScroll[historyList.length-1])
	}
	
//=============================================================================