function toggleElementVisibility(elementID)
{
	if( document.getElementById ) // IE5+ & Gecko
	{
		if( document.getElementById(elementID).style.visibility=="visible" )
			document.getElementById(elementID).style.visibility = "hidden";
		else
			document.getElementById(elementID).style.visibility = "visible";
	}
	else if( document.all ) // IE4
	{
		if( document.all[elementID].style.visibility=="visible" )
			document.all[elementID].style.visibility = "hidden";
		else
			document.all[elementID].style.visibility = "visible";
	}
	else if( document.layers ) // Netscape 4
	{
		if( document.layers[elementID].visibility=="show" )
			document.layers[elementID].visibility = "hide";
		else
			document.layers[elementID].visibility = "show";
	}
}