function mm (d) 
{
	if(d.style.visibility=='hidden')
	{d.style.visibility='visible';d.style.position='fixed';}
	else
	{d.style.visibility='hidden';d.style.position='absolute';}
}
function showhidediv(div_id)

{
if (document.getElementById(div_id).style.visibility=='visible')
{
document.getElementById(div_id).style.visibility='hidden';
document.getElementById(div_id).style.position='absolute';
}
else if (document.getElementById(div_id).style.visibility=='hidden')
{
document.getElementById(div_id).style.visibility='visible';
document.getElementById(div_id).style.position='absolute';
}
}
function showhidediv1(div_id)

{
if (document.getElementById(div_id).style.visibility=='visible')
{
document.getElementById(div_id).style.visibility='hidden';
document.getElementById(div_id).style.position='absolute';
}
else if (document.getElementById(div_id).style.visibility=='hidden')
{
document.getElementById(div_id).style.visibility='visible';
document.getElementById(div_id).style.position='fixed';
}
}