function on(name)
	{
	document[name].src = 'images/' + name + '_on.gif';
	}
	
function off(name)
	{
	document[name].src = 'images/' + name + '_off.gif';
	}	
	
//popup for audio
		function popaud(url)	
		{
		    if (url != ""){
		       window.open(url,'popwindow','width=239,height=15,top=10,left=10');
		    } 
		}
// hello -->