Trying to made a signature field read only unless all checkboxes in a PDF form are checked

Well, I think I figured it out.  Rather than putting in a document-level script or a custom calculation script in a hidden text field, I just had to add this as a Mouse-Up action to each of the 62 check boxes:

var checkbox1 = this.getField("CheckBox01").value;
var checkbox2 = this.getField("CheckBox02").value;
var checkbox3 = this.getField("CheckBox03").value;
var checkbox4 = this.getField("CheckBox04").value;
var checkbox5 = this.getField("CheckBox05").value;
var checkbox6 = this.getField("CheckBox06").value;
var checkbox7 = this.getField("CheckBox07").value;
var checkbox8 = this.getField("CheckBox08").value;
var checkbox9 = this.getField("CheckBox09").value;
var checkbox10 = this.getField("CheckBox10").value;
var checkbox11 = this.getField("CheckBox11").value;
var checkbox12 = this.getField("CheckBox12").value;
var checkbox13 = this.getField("CheckBox13").value;
var checkbox14 = this.getField("CheckBox14").value;
var checkbox15 = this.getField("CheckBox15").value;
var checkbox16 = this.getField("CheckBox16").value;
var checkbox17 = this.getField("CheckBox17").value;
var checkbox18 = this.getField("CheckBox18").value;
var checkbox19 = this.getField("CheckBox19").value;
var checkbox20 = this.getField("CheckBox20").value;
var checkbox21 = this.getField("CheckBox21").value;
var checkbox22 = this.getField("CheckBox22").value;
var checkbox23 = this.getField("CheckBox23").value;
var checkbox24 = this.getField("CheckBox24").value;
var checkbox25 = this.getField("CheckBox25").value;
var checkbox26 = this.getField("CheckBox26").value;
var checkbox27 = this.getField("CheckBox27").value;
var checkbox28 = this.getField("CheckBox28").value;
var checkbox29 = this.getField("CheckBox29").value;
var checkbox30 = this.getField("CheckBox30").value;
var checkbox31 = this.getField("CheckBox31").value;
var checkbox32 = this.getField("CheckBox32").value;
var checkbox33 = this.getField("CheckBox33").value;
var checkbox34 = this.getField("CheckBox34").value;
var checkbox35 = this.getField("CheckBox35").value;
var checkbox36 = this.getField("CheckBox36").value;
var checkbox37 = this.getField("CheckBox37").value;
var checkbox38 = this.getField("CheckBox38").value;
var checkbox39 = this.getField("CheckBox39").value;
var checkbox40 = this.getField("CheckBox40").value;
var checkbox41 = this.getField("CheckBox41").value;
var checkbox42 = this.getField("CheckBox42").value;
var checkbox43 = this.getField("CheckBox43").value;
var checkbox44 = this.getField("CheckBox44").value;
var checkbox45 = this.getField("CheckBox45").value;
var checkbox46 = this.getField("CheckBox46").value;
var checkbox47 = this.getField("CheckBox47").value;
var checkbox48 = this.getField("CheckBox48").value;
var checkbox49 = this.getField("CheckBox49").value;
var checkbox50 = this.getField("CheckBox50").value;
var checkbox51 = this.getField("CheckBox51").value;
var checkbox52 = this.getField("CheckBox52").value;
var checkbox53 = this.getField("CheckBox53").value;
var checkbox54 = this.getField("CheckBox54").value;
var checkbox55 = this.getField("CheckBox55").value;
var checkbox56 = this.getField("CheckBox56").value;
var checkbox57 = this.getField("CheckBox57").value;
var checkbox58 = this.getField("CheckBox58").value;
var checkbox59 = this.getField("CheckBox59").value;
var checkbox60 = this.getField("CheckBox60").value;
var checkbox61 = this.getField("CheckBox61").value;
var checkbox62 = this.getField("CheckBox62").value;

var signatureField = this.getField("SignatureField");

if (checkbox1 == "Off" || checkbox2 == "Off" || checkbox3 == "Off" || checkbox4 == "Off" || checkbox5 == "Off" || checkbox6 == "Off" || checkbox7 == "Off" || checkbox8 == "Off" || checkbox9 == "Off" || checkbox10 == "Off" || checkbox11 == "Off" || checkbox12 == "Off" || checkbox13 == "Off" || checkbox14 == "Off" || checkbox15 == "Off" || checkbox16 == "Off" || checkbox17 == "Off" || checkbox18 == "Off" || checkbox19 == "Off" || checkbox20 == "Off" || checkbox21 == "Off" || checkbox22 == "Off" || checkbox23 == "Off" || checkbox24 == "Off" || checkbox25 == "Off" || checkbox26 == "Off" || checkbox27 == "Off" || checkbox28 == "Off" || checkbox29 == "Off" || checkbox30 == "Off" || checkbox31 == "Off" || checkbox32 == "Off" || checkbox33 == "Off" || checkbox34 == "Off" || checkbox35 == "Off" || checkbox36 == "Off" || checkbox37 == "Off" || checkbox38 == "Off" || checkbox39 == "Off" || checkbox40 == "Off" || checkbox41 == "Off" || checkbox42 == "Off" || checkbox43 == "Off" || checkbox44 == "Off" || checkbox45 == "Off" || checkbox46 == "Off" || checkbox47 == "Off" || checkbox48 == "Off" || checkbox49 == "Off" || checkbox50 == "Off" || checkbox51 == "Off" || checkbox52 == "Off" || checkbox53 == "Off" || checkbox54 == "Off" || checkbox55 == "Off" || checkbox56 == "Off" || checkbox57 == "Off" || checkbox58 == "Off" || checkbox59 == "Off" || checkbox60 == "Off" || checkbox61 == "Off" || checkbox62 == "Off") {
signatureField.display = display.hidden;
} else {
signatureField.display = display.visible;
}