var coldid1="ms1";
    var cold1="suoni";
	
	
	function Changeshuma(coldid,cold)
	{
	
	    if(coldid!=coldid1)
	    {
	        document.getElementById(coldid).className="shuma01";
	        document.getElementById(cold).style.display="block";		  
	        
	        document.getElementById(coldid1).className="shuma02";
	        document.getElementById(cold1).style.display="none";			    
	        
	        coldid1=coldid;
	        cold1=cold;
	    
	    }
	}