function disableFormItems( number ) {

	var firstName = document.getElementById("FN"+number");
	var lastName = document.getElementById("LN"+number");
	var companyName = document.getElementById("CN"+number");
	var jobTitle = document.getElementById("JT"+number");
	var email = document.getElementById("Em"+number");
	var phone = document.getElementById("Ph"+number");	
	var reminder = document.getElementById("Rm"+number");

	var checkbox = document.getElementById("Ltr"+number");

	if( checkbox.checked == true ) {
		var action = false;
	} else {
		var action = true;
	}

	firstName.disabled = action;
	lastName.disabled = action;
	companyName.disabled = action;
	jobTitle.disabled = action;
	email.disabled = action;
	phone.disabled = action;
	reminder.disabled = action;
}