function displaybubble(boxname){
	if(document.getElementById){
		if(document.all){
			document.getElementById(boxname).style.display='inline';
		} else {
			document.getElementById(boxname).style.display='inherit';
		}
	}
}

function hidebubble(boxname){
	if(document.getElementById){
		document.getElementById(boxname).style.display='none';
	}
}

function bubbleisdisplayed(boxname){
	if(document.getElementById){
		if(document.all){
			if( document.getElementById(boxname).style.display == 'inline' ){
				return true;
			}
		} else {
			if( document.getElementById(boxname).style.display == 'inherit' ){
				return true;
			}
		}
	}
	return false;
}

function greenitem(itemname){
	if(document.getElementById){
		document.getElementById(itemname).style.textDecoration = "underline";
	}
}

function reditem(itemname){
	if(document.getElementById){
		document.getElementById(itemname).style.textDecoration = "none";
	}
}

var lastbubble;
var lastitem;

var lastbgcolor;
var lastcolor;

var lastnavbubble = null;

function blowbubble(bubblename){

	var newitem = bubblename + "Item";

	hidebubble(lastbubble);
	displaybubble(bubblename);

	reditem(lastitem);
	greenitem(newitem);
	
	lastbubble = bubblename;
	lastitem = newitem;

	return false;
}

function blownavbubble(bubblename){

	plusname = bubblename + "Plus";
	minusname = bubblename + "Minus";

	if( bubbleisdisplayed(bubblename) ){
		hidebubble(bubblename);
		hidebubble(minusname);
		displaybubble(plusname);
	} else {
		displaybubble(bubblename);
		displaybubble(minusname);
		hidebubble(plusname);
	}
}

function loadbubble(bubblename){

	lastbubble = bubblename;
	lastitem = bubblename + 'Item';

	greenitem(lastitem);
	displaybubble(bubblename);

}