function showsummary(id){ 
if (document.getElementById){ 
obj = document.getElementById(id); 
if (obj.style.display == "none"){ 
obj.style.display = ""; 
} else { 
obj.style.display = "none"; 
} 
} 
} 


function hidesummary(id){ 
if (document.getElementById){ 
obj = document.getElementById(id); 
if (obj.style.display == "block"){ 
obj.style.display = "none"; 
} else { 
obj.style.display = "none"; 
} 
} 
}