function showRanktab(btnid,tabid,tabnumber)
{
	for (i = 1;i<=tabnumber;i++)
	{

		document.getElementById(tabid+"_btn"+i).className = "";
		document.getElementById(tabid+"_sub"+i).style.display = "none";
	}
	document.getElementById(tabid+"_btn"+btnid).className = "select";
	document.getElementById(tabid+"_sub"+btnid).style.display = "";
}

function showRecommendtab(btnid,tabid,tabnumber)
{
	for (i = 1;i<=tabnumber;i++)
	{

		document.getElementById(tabid+"_btn"+i).className = "";
		document.getElementById(tabid+"_sub"+i).style.display = "none";
	}
	document.getElementById(tabid+"_btn"+btnid).className = "select";
	document.getElementById(tabid+"_sub"+btnid).style.display = "";
}