// nochange.js
// This script illustrates using the focus event
// to prevent the user from changing a text field

// The event handler function to compute the cost

function computeCost() {
 var french = document.getElementById("french").value;
 var hazlenut = document.getElementById("hazlenut").value;
 var columbian = document.getElementById("columbian").value;

// Compute the cost

 document.getElementById("cost").value = 
 totalCost = french * 3.49 + hazlenut * 3.95 + 
 columbian * 4.59;
} //* end of computeCost