function removeClassFromList( name, classList )
{
  var idx;
  var newClassArr = [];
  var classArr = classList.split(' ');  // split space-separated list
  var len = classArr.length;
  
  // make a new array from whats left after removing class 'name' and any
  // empty strings for the current 'classList'
  for( idx = 0; idx < len; idx++ ) {
    if ( classArr[idx] !== name && classArr[idx] !== '' ) {
      newClassArr.push( classArr[idx] );
    }    
  }

  // return a space-separated string from the remaining classes
  return newClassArr.join(" ");
}

function highlightElement(element)
{
  if ( element.className ) {
    element.className += ' ' + 'box-checker';
  }
  else {
    element.className = 'box-checker';
  }
}

function unhighlightElement(element)
{
   element.className = removeClassFromList( 'box-checker', element.className );
}

function toggleByName(name, min, max)
{
   var i;
   var elems = document.getElementsByName(name);

   var toggle_checked = false;
   for (i = 0; i < elems.length; i++) //if there are any unchecked boxes in the row, check all
      if (elems[i].checked == false)
      {
			if (min != undefined && elems[i].value < min)
				continue;
			if (max != undefined && elems[i].value > max)
				continue;
			if (elems[i].disabled == true)
				continue;
         toggle_checked = true;
         break;
      }

   for (i = 0; i < elems.length; i++)
   {
		if (min != undefined && elems[i].value < min)
			continue;
		if (max != undefined && elems[i].value > max)
			continue;
		if (elems[i].disabled == true)
			continue;
      elems[i].checked = toggle_checked;
   }
}

function toggleByValue(form_name, value)
{
   var i;
   var form = document.getElementById(form_name);

   var toggle_checked = false;
   for (i = 0; i < form.elements.length; i++) //if there are any unchecked boxes in the row, check all.
	{
		if (form.elements[i].type == "radio" && form.elements[i].value == value)
		{	//Radio buttons should never be unchecked
			toggle_checked = true;
			break;
		}
      if (form.elements[i].type == "checkbox" && form.elements[i].value == value && form.elements[i].checked == false)
      {
         toggle_checked = true;
         break;
      }
	}

   for (i = 1; i < form.elements.length - 1; i++)
      if ((form.elements[i].type == "radio" || form.elements[i].type == "checkbox")
			&& form.elements[i].value == value)
         form.elements[i].checked = toggle_checked;
}