function imgStepper()
{
   var position = '';
   switch( $('myform').down().id ){
     case 'yearBuilt':    position = '100px 0px'; break;
     case 'burglarAlarm': position = '200px 0px'; break;
     case 'CVA':          position = '300px 0px'; break;
     case 'deductible' :  position = '400px 0px'; break;
     case 'lo':           position = '500px 0px'; break;
   }

   $("myImagePlaceHolder").setStyle('background-position:' + position );
}