var timeout	= 500;
	var closetimer	= 0;
	var ddmenuitem	= 0;
	
	function mopen(id)
	{	
		mcancelclosetime();
	
		if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	
		ddmenuitem = document.getElementById(id);
	
		ddmenuitem.style.visibility = 'visible';
	}
	
	function mclose()
		{ if(ddmenuitem) ddmenuitem.style.visibility = 'hidden'; }
	
	
	function mclosetime()
		{ closetimer = window.setTimeout(mclose, timeout); }
	
	
	function mcancelclosetime()
	{
		if(closetimer)
		{
			window.clearTimeout(closetimer);
			closetimer = null;
		}
	}
	
	function open_close()
	{
		if(document.getElementById('login_form').style.display == 'none')
		{
			document.getElementById('login_form').style.display = 'block';
		}
		else
		{
			document.getElementById('login_form').style.display = 'none';
		}
		
		
	}