var NowId;
NowId=1;
function chgTitle(sid)
{ 
  if(sid==1)
  { 
    document.all["HeadTitle1"].style.display=""; 
	document.all["HeadTitle2"].style.display="none"; 
  }
  else if(sid==2)
  { 
     document.all["HeadTitle1"].style.display="none";
	 document.all["HeadTitle2"].style.display=""; 
  } 
  NowId=sid;
 }
 function noth() { ;} 
 function nexttitle()
{
		switch( NowId )
		{
			case 1:
			{
                chgTitle(1);
				break;
			}
			case 2:
			{
                chgTitle(2);
				break;
			}
	   }

	if(NowId < 2)
	{
		NowId++ ; 
	}
	else 
	{
		NowId=1;
	}

   theTimer = setTimeout("nexttitle()", 5000) ; 
}