function showhide(id){
if (document.getElementById){
obj = document.getElementById(id); 
if (obj.style.display == "none"){  
    
    document.getElementById(0).style.display = "none";
    document.getElementById(1).style.display = "none";
    document.getElementById(2).style.display = "none";
    document.getElementById(3).style.display = "none";
    document.getElementById(4).style.display = "none";
    document.getElementById(5).style.display = "none";
 
    obj.style.display = "";
    
} else {
obj.style.display = "none"; 
}
}
}