Hiding the submit button until all required fields are filled out

I have this code located in the Custom Calculation Script box in another hidden field.

In this one, I wanted a "results" field to display only when all 6 fields were field out. I tried something simliar for the button too. I have this code located in the Custom Calculation Script box in a hidden field since the "results" field has something else in it for displaying results.

var nameData = this.getField("Name").value;
var vehicleData= this.getField("Vehicle").value;
var premiumData = this.getField("Premium Increase").value;
var pmilesData = this.getField("Previous Miles").value;
var cmilesData = this.getField("Current Miles").value;
var dateData = this.getField("Renewal Date").value;

if(nameData != " " && vehicleData != " " && premiumData != " " && pmilesData != " " && cmilesData != " " && dateData != " "){
    this.getField("results").display = display.visble;
}
else {
this.getField("results").display = display.hidden;
}