//记录是否使用位置记录...
var isValid;

//定义刷新页面后位置...
function LoadLocate()
{
	isValid = true;
	
	if(arr=document.cookie.match(/scrollTop=([^;]+)(;|$)/))
	{
		document.body.scrollTop = parseInt(arr[1]);
		document.documentElement.scrollTop = parseInt(arr[1]);
	}
}

//记录页面位置...
function UnLoadLocate()
{
	if (isValid == true)
	{
		var documentTop = document.documentElement.scrollTop || document.body.scrollTop;
		document.cookie = "scrollTop=" + documentTop;
	}
	else
	{
		document.cookie = "scrollTop=0";
	}
}

//取消记录页面位置...
function CancleLocate()
{
	isValid = false;
}