var cur_box = "";
function popbox(boxId, state){
	popper = document.getElementById(boxId);
	if(state){
		if(cur_box == ""){
			cur_box = boxId;
		} else {
			document.getElementById(cur_box).style.display = "none";
			cur_box = boxId;
		}
		popper.style.display = "block";
	} else {
		popper.style.display = "none";
		cur_box = "";
	}
}