function mChange(obj1,obj2,obj3,obj4,obj5) {	
	document.getElementById(obj1).className = 'on';	
	document.getElementById(obj2).className = 'off';
	document.getElementById(obj3).className = 'off';
	document.getElementById(obj4).className = 'off';
	document.getElementById(obj5).className = 'off';
	document.getElementById(obj1+'img').src = 'images/'+obj1+'n.jpg';
	document.getElementById(obj2+'img').src = 'images/'+obj2+'f.jpg';
	document.getElementById(obj3+'img').src = 'images/'+obj3+'f.jpg';
	document.getElementById(obj4+'img').src = 'images/'+obj4+'f.jpg';
	document.getElementById(obj5+'img').src = 'images/'+obj5+'f.jpg';
	return true;
}