function sizecheck()  {
  if(document.getElementById('selid')) {
    var myindex=document.getElementById('selid').selectedIndex;
    if (myindex=='') {
      alert("Please select a style.");
      document.getElementById('selid').focus();
      return false;
    }
  }
  if(document.getElementById('selsize')) {
    var myindex=document.getElementById('selsize').selectedIndex;
    if (myindex=='') {
      alert("Please select a size.");
      document.getElementById('selsize').focus();
      return false;
    }
  }
  return true;
}