function sub(id)
{
    	closeAll(id);
    	Obj = document.getElementById(id);
    	TR = document.getElementById('menu' + id);
    	Obj.style.display = (Obj.style.display == '') ? 'none' : '';
    	TR.className = (Obj.style.display == '') ? 'navheaderexpand' : 'navheadercollapse ';
}
function closeAll(exception)
{
   	divs = document.getElementsByTagName('div') ;
    	for(i=0; i<(divs.length); i++) 
	{
        		if(exception != divs[i].id)
		{
            			divs[i].style.display = 'none';
            			document.getElementById('menu' + divs[i].id).className = 'navheadercollapse ';
        		}
    	}
	
}