function switchbox(i)   
{   
selectbox(i);   
}   
function selectbox(i)   
{   
switch(i)   
{  
case 1:   
document.getElementById("m2").style.display="none";  
document.getElementById("m4").style.display="none";  
document.getElementById("m3").style.display="none"; 
document.getElementById("m6").style.display="none";
document.getElementById("m5").style.display="none";  
break;    
case 2:   
document.getElementById("m3").style.display="none";  
document.getElementById("m4").style.display="none";  
document.getElementById("m5").style.display="none"; 
document.getElementById("m6").style.display="none";
document.getElementById("m2").style.display="block";  
break;   
case 3:   
document.getElementById("m2").style.display="none";  
document.getElementById("m4").style.display="none";  
document.getElementById("m5").style.display="none"; 
document.getElementById("m6").style.display="none";
document.getElementById("m3").style.display="block";  
break;   
case 4:   
document.getElementById("m3").style.display="none";  
document.getElementById("m2").style.display="none";  
document.getElementById("m5").style.display="none"; 
document.getElementById("m6").style.display="none";
document.getElementById("m4").style.display="block";  
break;   
case 5:   
document.getElementById("m2").style.display="none";  
document.getElementById("m4").style.display="none";  
document.getElementById("m3").style.display="none"; 
document.getElementById("m6").style.display="none";
document.getElementById("m5").style.display="block";  
break; 
case 6:   
document.getElementById("m2").style.display="none";  
document.getElementById("m4").style.display="none";  
document.getElementById("m3").style.display="none"; 
document.getElementById("m5").style.display="none";
document.getElementById("m6").style.display="block";  
break; 
}  
} 
// JavaScript Document