function toggle(targetId) {
	var ele = document.getElementById(targetId);
	if(ele.style.display == "block") {
    		ele.style.display = "none";
  	}
	else {
		ele.style.display = "block";
	}
} 

function toggle_div(targetId,sourceId) {
	var source_id = document.getElementById(sourceId);
	var ele = document.getElementById(targetId);
	if(source_id.value == "NO") {
    		ele.style.display = "none";
  	}
	else {
		ele.style.display = "block";
	}
}