<!--
function getSelectedRadio(buttonGroup) {
  // returns the array number of the selected radio button or -1 if no button is selected
  if (buttonGroup[0]) { // if the button group is an array (one button is not an array)
    for (var i=0; i<buttonGroup.length; i++) {
      if (buttonGroup[i].checked) {
        return i
      }
    }
  } else {
    if (buttonGroup.checked) { return 0; } // if the one button is checked, return zero
  }
  // if we get to this point, no radio button is selected
  return -1;
} // Ends the "getSelectedRadio" function

function getSelectedRadioValue(buttonGroup) {
  // returns the value of the selected radio button or "" if no button is selected
  var i = getSelectedRadio(buttonGroup);
  if (i == -1) {
    return "";
  } else {
    if (buttonGroup[i]) { // Make sure the button group is an array (not just one button)
      return buttonGroup[i].value;
    } else { // The button group is just the one button, and it is checked
      return buttonGroup.value;
    }
  }
} // Ends the "getSelectedRadioValue" function

function getSelectedCheckbox(buttonGroup) {
  // Go through all the check boxes. return an array of all the ones
  // that are selected (their position numbers). if no boxes were checked,
  // returned array will be empty (length will be zero)
  var retArr = new Array();
  var lastElement = 0;
  if (buttonGroup[0]) { // if the button group is an array (one check box is not an array)
    for (var i=0; i<buttonGroup.length; i++) {
      if (buttonGroup[i].checked) {
        retArr.length = lastElement;
        retArr[lastElement] = i;
        lastElement++;
      }
    }
  } else { // There is only one check box (it's not an array)
    if (buttonGroup.checked) { // if the one check box is checked
      retArr.length = lastElement;
      retArr[lastElement] = 0; // return zero as the only array value
    }
  }
  return retArr;
}

function getSelectedCheckboxValue(buttonGroup) {
  // return an array of values selected in the check box group. if no boxes
  // were checked, returned array will be empty (length will be zero)
  var retArr = new Array(); // set up empty array for the return values
  var selectedItems = getSelectedCheckbox(buttonGroup);
  if (selectedItems.length != 0) { // if there was something selected
    retArr.length = selectedItems.length;
    for (var i=0; i<selectedItems.length; i++) {
      if (buttonGroup[selectedItems[i]]) { // Make sure it's an array
        retArr[i] = buttonGroup[selectedItems[i]].value;
      } else { // It's not an array (there's just one check box and it's selected)
        retArr[i] = buttonGroup.value;// return that value
      }
    }
  }
  return retArr;
}

function getSelectedOptionValue(optionGroup) {
  return optionGroup.options[optionGroup.selectedIndex].value;
}

function deleteAllOptions(sel) {
 sel.options.length=0;
}

function deleteOption(sel, idx) {
 sel.options[idx] = null;
}

function insertOptionAt(sel,option,idx) {
 for (var i=sel.options.length; i>idx; i--) {
  sel.opitons[i] = sel.options[i-1];
 }
 sel.options[idx] = option;
}

function checkDate(mSel,dSel,ySel,bEmptyOptionAtTop) {
 var lastDay = dSel.options.length;
 var month=mSel.value;
 var year=ySel.value;
 var i,idx;
 if (bEmptyOptionAtTop) lastDay = lastDay - 1;
 if (month=='1' || month=='3' || month=='5' || month=='7' || month=='8' || month=='10' || month=='12') {
  for (i=lastDay;i<31;i++) {
   if (bEmptyOptionAtTop) idx=i+1; else idx=i;
   insertOptionAt(dSel, new Option(i+1,i+1), idx);
  }
 }
 if (month=='4' || month=='6' || month=='9' || month=='11') {
  for (i=lastDay;i<30;i++) {
   if (bEmptyOptionAtTop) idx=i+1; else idx=i;
   insertOptionAt(dSel, new Option(i+1,i+1), idx);
  }
  if (bEmptyOptionAtTop) idx=31; else idx=30;
  deleteOption(dSel, idx);
 }
 if (month=='2') {
  for (i=lastDay;i<29;i++) {
   if (bEmptyOptionAtTop) idx=i+1; else idx=i;
   insertOptionAt(dSel, new Option(i+1,i+1), idx);
  }
  if ( ((year % 4)==0) && ( ((year % 100)!=0) || ((year % 400)==0) ) ) { // leap year
    for (i=30;i<=31;i++) {
     if (bEmptyOptionAtTop) idx=30; else idx=29;
     deleteOption(dSel, idx);
    }
  } else {
    for (i=29;i<=31;i++) {
     if (bEmptyOptionAtTop) idx=29; else idx=28;
     deleteOption(dSel, idx);
    }
  }
 }
 return true;
}

function validate_email(email_str) {
 var reg1 = /(@.*@)|(\.\.)|(@\.)|(\.@)|(^\.)/; //not valid
 var reg2 = /^.+\@(\[?)[a-zA-Z0-9\-\.]+\.([a-zA-Z]{2,3}|[0-9]{1,3})(\]?)$/; //valid
 if (! email_str) {return -1;}
 else if (reg1.test(email_str) || ! reg2.test(email_str)) {return 0;}
 return 1;
}

function disableEnterKey() { 
  if (window.event.keyCode == 13) window.event.keyCode = 0; 
}