JS Drop Down

[alfman05302001]

I have googled around for some help on this but probably am using the wrong terms.

I want to enter a number into a text field then based on that number generate a drop down.

if the number in the text field is 0 the drop down option should only offer 0
if the number in the text field is 1-50 the drop down options should be 0 and 1
if 51+ the options should be 0,1,2

Thanks guys

[alfman05302001]

I would like to clarify that the drop down ( <option></option> ) is the type in a form not a menu