function vis1(r)
{
	document.getElementById('arrow_td_'+r).innerHTML=document.getElementById('up_arrow_'+r).innerHTML;
	if(document.getElementById('show_'+r).innerHTML=="")
	{ 
	document.getElementById('show_'+r).innerHTML=document.getElementById(r).innerHTML;
	document.getElementById('arrow_td_'+r).innerHTML=document.getElementById('up_arrow_'+r).innerHTML;
	}
	else 
	{
	document.getElementById('show_'+r).innerHTML="";
	document.getElementById('arrow_td_'+r).innerHTML=document.getElementById('down_arrow_'+r).innerHTML;
	}			
}

function hid_vis1(r)
{
	document.getElementById('show_'+r).innerHTML="";
	document.getElementById('arrow_td_'+r).innerHTML=document.getElementById('down_arrow_'+r).innerHTML;
}