function openTab(id,special)
{
	if(!document.getElementById)return;
	for(var i=0;i<5;i++)
	{
		var el=document.getElementById("tab_"+i+"_link");
		if(el)el.className = el.className.replace(/(^|\s)active($|\s)/g,"");
	}
	document.getElementById("tab_"+id+"_link").className += " active";
	if(!special)
	{
		for(var i=0;i<5;i++)
		{
			var el=document.getElementById("tab_"+i+"_content");
			if(el)el.style.display = "none";
		}
		document.getElementById("tab_"+id+"_content").style.display = "";
	}
	else
	{
		for(var i=0;i<5;i++)
		{
			var el=document.getElementById("tab_"+i+"_content");
			if(el)el.style.display = (special=="openall")?"":"none";
		}
	}
}