function divchange(divname)
{
	var objRef = document.getElementById(divname).style
	//alert('sadfdsafsd');
	if (objRef.display == 'block')
	{
		objRef.display = 'none'
	}
	else
	{
		objRef.display = 'block'
	}
}


//function closeSession()
//{
//	<?php
//    unset($_SESSION['user']['username']);
//    unset($_SESSION['user']['role']);
//  
//    ?>
//}
//