var DHTML = (document.getElementById || document.all || document.layers);
var tout;
var vidDone = false;
var vdTimer = setTimeout("vidDone=true",30000);
var defaultDIV = "w13";


function getObj(name)
{
  if (document.getElementById)
  {
        this.obj = document.getElementById(name);
        this.style = document.getElementById(name).style;
  }
  else if (document.all)
  {
        this.obj = document.all[name];
        this.style = document.all[name].style;
  }
  else if (document.layers)
  {
        this.obj = document.layers[name];
        this.style = document.layers[name];
  }
}

function invi(flag,divName)
{
        if (!DHTML) return;
        var x = new getObj(divName);
        x.style.visibility = (flag) ? "hidden" : "visible";
}

function switchTo(divName)
{
	for (var i=0; i<numOfClients+1; i++)
	{
		invi(true,"w"+i);
	}
	
	clearTimeout(tout);
	invi(false,divName);
}

function resetBox()
{
	for (var i=1; i<=numOfClients; i++) // numOfClients should be defined in HTML doc
	{
		invi(true,"w"+i);
	}
	
	//if (vidDone) invi(false,"w0");
	//else 
	invi(false,defaultDIV);
}

function startTimer()
{
		if (!DHTML) return;
		//if (vidDone) tout = setTimeout("resetBox()",8000);
		// else 
		tout = setTimeout("resetBox()",1000);
}