function hideSelects() 
{
	if(document.getElementsByTagName)
	{
		var el = document.getElementsByTagName("selectMenu");
    	
    	for(var i=0; i < el.length; i++)
		{
			if ( el[i].style.visibility != 'hidden' ) 
			{
				el[i].style.visibility = 'hidden';
			}
			else 
			{
				el[i].style.visibility = 'visible';
			}
		}
	}
	else
	{
		return;
	}
}