function szchange(vsizes) {
  var sizeChart = new Array('S','M','L','XL','2X','3X');
  var sizeAvail = new Array(vsizes.charAt(5),vsizes.charAt(6),vsizes.charAt(7),vsizes.charAt(8),vsizes.charAt(11),vsizes.charAt(12));
  var count,theSize;


  for(count = 0; count < 6; count++) {
    theSize = 'Uj'+sizeChart[count]+'j0';
    if(document.lk.elements[theSize]) {
      if( sizeAvail[count] == 0 ) {
        document.lk.elements[theSize].value='N/A';
        document.lk.elements[theSize].disabled = true;
      } else {
         document.lk.elements[theSize].value='';
         document.lk.elements[theSize].disabled = false;
      }
    }
  }
}