function showthat(iddiv)
{
	if(document.getElementById(iddiv).style.visibility=='hidden')
	{
		document.getElementById(iddiv).style.visibility = 'visible';
		document.getElementById(iddiv).style.display='block';
	}
	else
	{
		document.getElementById(iddiv).style.visibility = 'hidden';
		document.getElementById(iddiv).style.display='none';		
	}
}