var tbCurrentTabID = 't1';
var tbCurrentTab = 'tab1';

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function showTab(tid, tab) {
	var menu = MM_findObj(tab);
	menu.className = menu.className.replace('tbhide','tbshow');
	
	var tablink = MM_findObj(tid);
	tablink.style.fontWeight = "bold";
	tablink.className = "selected";
	
	var currentTab = MM_findObj(tbCurrentTab);
	if( currentTab ){
		if( tbCurrentTabID != tid) {
			hideTab(tbCurrentTabID, tbCurrentTab);
		}
	}
	
	tbCurrentTabID = tid;
	tbCurrentTab = tab;
}

function hideTab(tid, tab) {
	var menu = MM_findObj(tab);
	menu.className = menu.className.replace('tbshow','tbhide');
	var tablink = MM_findObj(tid);
	tablink.style.fontWeight = "normal";
	tablink.className = "";
}

function showTab_old(tid, tab) {
	var menu = MM_findObj(tab);
	menu.className = menu.className.replace('tbhide','tbshow');
	var tablink = MM_findObj(tid);
	tablink.style.fontWeight = "bold";
	
	if( tbCurrentTabID != tid) {
		hideTab(tbCurrentTabID, tbCurrentTab);
	}
	tbCurrentTabID = tid;
	tbCurrentTab = tab;
}