function hide2(i){
	sum = document.getElementById("s"+i);
	bod = document.getElementById("b"+i);
	if(bod.style.display == "none"){
		bod.style.display = "block";
		sum.style.display = "none";
		document.getElementById("p"+i).innerHTML = "–"
	}
	else {
		document.getElementById("p"+i).innerHTML = "+"
		bod.style.display = "none";
		sum.style.display = "block";
	}
}