function HideAllLayers()
{
	HideLayer('popup1');HideLayer('popup2');HideLayer('popup3');HideLayer('popup4');HideLayer('popup5');
	HideLayer('popup6');HideLayer('popup7');HideLayer('popup8');
	
}
function ShowLayer(id) 
	{ 
	HideAllLayers();
	document.getElementById(id).style.display = 'block';
	}
function HideLayer(id) 
	{ 
	document.getElementById(id).style.display = 'none';
	}
function ToggleLayer(id) 
	{ 
	if (document.getElementById(id).style.display == 'none' || document.getElementById(id).style.display == '')
		document.getElementById(id).style.display = 'block';
	else
		document.getElementById(id).style.display = 'none';
	}