function makeMySQLdate(field) {
if (field.value == '') return;
if (field.value.indexOf('-') != -1) return;
var yy; var mm; var dd;
var mmddyy = field.value;

// alert(mmddyy)

var datearray = mmddyy.split('/');
if (datearray[2].length == 1) {yy = '200' + datearray[2];}
if (datearray[2].length == 2) {yy = '20' + datearray[2]; }
if (datearray[2].length == 4) {yy = datearray[2]; }
if (datearray[1].length == 1) {mm = '0' + datearray[1]; }
else { mm = datearray[1]; }

if (datearray[0].length == 1) { dd = '0' + datearray[0]; }

else {dd  = datearray[0]; }

var yymmdd = yy + '-' + mm + '-' + dd;

// alert(ddmmyy);

field.value = yymmdd;
         }
         
         
         
function submitform() {
         makeMySQLdate(document.forms['insert_date'].bux_date);

         
         document.forms.insert_date.submit();

}