function tshow(i)
{	
	
	document.getElementById("pg1").className='no';
	document.getElementById("pg2").className='no';
	document.getElementById("pg3").className='no';
	document.getElementById("pg4").className='no';
	document.getElementById("pg"+i).className='yes';
	
  document.getElementById("pgs1").style.display='none';
  document.getElementById("pgs2").style.display='none';
  document.getElementById("pgs3").style.display='none';
  document.getElementById("pgs4").style.display='none';
  document.getElementById("pgs"+i).style.display='';
}


function tshow2(i)
{	
	
	document.getElementById("pg1").className='no';
	document.getElementById("pg2").className='no';
	document.getElementById("pg3").className='no';
	//document.getElementById("pg4").className='no';
	document.getElementById("pg"+i).className='yes';
	
  document.getElementById("pgs1").style.display='none';
  document.getElementById("pgs2").style.display='none';
  document.getElementById("pgs3").style.display='none';
  //document.getElementById("pgs4").style.display='none';
  document.getElementById("pgs"+i).style.display='';
}
/*
function tshow3(i)
{	
	
	document.getElementById("pg1").className='no';
	document.getElementById("pg2").className='no';
	document.getElementById("pg3").className='no';
	document.getElementById("pg"+i).className='yes';
	
  document.getElementById("pgs1").style.display='none';
  document.getElementById("pgs2").style.display='none';
  document.getElementById("pgs3").style.display='none';
  document.getElementById("pgs"+i).style.display='';
  
}
*/