function changeTheDate(form) {
var addedPart;

// Get the url ready
//var newURL = "http://www.llanerch-vineyard.co.uk/" + dateFrm.thePage.value + ".asp?";
var newURL = dateFrm.thePage.value + ".asp?";

addedPart = 0;
// If a month is selected the add the month string else leave blank
if (dateFrm.monthCbo.value != "select") {
   newURL = newURL + "mon=" + dateFrm.monthCbo.value;
   addedPart = 1;
   }

// If a year is selected the add the year string else leave blank
if (dateFrm.yearCbo.value != "select") {
   if (addedPart == 1) newURL = newURL + "+";
   newURL = newURL + "yr=" + dateFrm.yearCbo.value;
   }

window.location = newURL
}