var aaa = document.getElementsByTagName('ul');
 
	for(i=0;i<aaa.length;i++)
	{
		if(aaa[i].id.indexOf('submenu_')>-1)		
		{
			aaa[i].style.display = 'none';
		}
	}	
function showsubmenu(sid)
{
	var aaa = document.getElementsByTagName('ul');
	for(i=0;i<aaa.length;i++)
	{		
		if(aaa[i].id=='submenu_'+sid)
		{
		   var bbb = document.getElementById("submenu_" + sid );
	       if(bbb.style.display=='')
		      bbb.style.display='none';
		   else
		      bbb.style.display='';
		}
		else if(aaa[i].id.indexOf('submenu_')>-1)
		{
		    aaa[i].style.display = 'none'
		}
	}	
	;
}