function openClose(id)
{
	if(document.getElementById) 
	{
		element = document.getElementById(id);
	} 
	else if(document.all) 
	{
		element = document.all[id];
	} 
	else return;

	if(element.style) 
	{
		if(element.style.display == 'block' )
		{
			element.style.display = 'none';
		} 
		else 
		{
			element.style.display = 'block';
		}
	}
}