// toggle display 
function toggle(list,other){ 
var listElementStyle=document.getElementById(list).style;
var otherElementStyle=document.getElementById(other).style;  
if (listElementStyle.display=="none"){ 
	listElementStyle.display="block";
	otherElementStyle.display="none";
 	}
	else{ listElementStyle.display="none"; 
 	} 
}
function initialise_none(list,other){
var listElementStyle=document.getElementById(list).style;
var otherElementStyle=document.getElementById(other).style;  
listElementStyle.display="none";
otherElementStyle.display="none";
}
function initialise_one(list,other){
var listElementStyle=document.getElementById(list).style;
var otherElementStyle=document.getElementById(other).style;  
listElementStyle.display="block";
otherElementStyle.display="none";
}