function switchTag(tag,content)
{
	for(i=1; i <3; i++)
	{
		if ("tag"+i==tag)
		{
			document.getElementById(tag).getElementsByTagName("a")[0].getElementsByTagName("span")[0].className="selectspan"+i;
		}else{
			document.getElementById("tag"+i).getElementsByTagName("a")[0].className="";
			document.getElementById("tag"+i).getElementsByTagName("a")[0].getElementsByTagName("span")[0].className="";
		}
		if ("content"+i==content)
		{
			document.getElementById(content).className="";
		}else{
			document.getElementById("content"+i).className="none";
		}
		document.getElementById("content").className=content;
	}
}
function switchTagb(tagb,context)
{
	for(i=1; i <5; i++)
	{
		if ("tagb"+i==tagb)
		{
			document.getElementById(tagb).getElementsByTagName("a")[0].getElementsByTagName("span")[0].className="selectspan"+i;
		}else{
			document.getElementById("tagb"+i).getElementsByTagName("a")[0].className="";
			document.getElementById("tagb"+i).getElementsByTagName("a")[0].getElementsByTagName("span")[0].className="";
		}
		if ("context"+i==context)
		{
			document.getElementById(context).className="";
		}else{
			document.getElementById("context"+i).className="none";
		}
		document.getElementById("context").className=context;
	}
}