This JavaScript program allows you to calculate the growth of warrants for a given growth in the underlying equity, as long as you have a fairly up-to-date browser such as Netscape Navigator 3 or later, or Internet Explorer 4. You simply need to input the share price, warrant price, exercise price, number of years remaining (eg four and a half years = 4.5), and the percentage annual rate of the underlying shares (eg '8' for 8%pa), then click on the 'compute' button. When entering your data, please enter the numbers only - eg enter '85', not '85p'.