function toggle(a)
{
	block1 = document.getElementById(a+'a');
	block2 = document.getElementById(a+'b');
	if (block1.style.display == "")
	{
		block1.style.display = "none";	
		block2.style.display = "";	
		block2.style.display = "m";
	
		
	}
	else
	{
		block2.style.display = "none";
	
		
		
		block1.style.display = "";	
	}
	return false;
}