var dash= new Array("","","3","4","5","6","7","10","11","12","13","14","15","16","17","20","21","22","23","24","25","26","27","30","31","32","33","34","35","36","37","40","41","42","43","44","45","46","47","50","51","52","53","54","55","56","57","60");
var nominal= new Array("","","3/8","1/2","5/8","3/4","7/8","1","1-1/8","1-1/4","1-3/8","1-1/2","1-5/8","1-3/4","1-7/8","2","2-1/8","2-1/4","2-3/8","2-1/2","2-5/8","2-3/4","2-7/8","3","3-1/8","3-1/4","3-3/8","3-1/2","3-5/8","3-3/4","3-7/8","4","4-1/8","4-1/4","4-3/8","4-1/2","4-5/8","4-3/4","4-7/8","5","5-1/8","5-1/4","5-3/8","5-1/2","5-5/8","5-3/4","5-7/8","6");

var anbolts = new Array("AN3","AN4","AN5","AN6","AN7","AN8");
var grips = new Array(

  Array("","","1/16","1/8","1/4","3/8","1/2","5/8","3/4","7/8","1","1-1/8","1-1/4","1-3/8","1-1/2","1-5/8","1-3/4","1-7/8","2","2-1/8","2-1/4","2-3/8","2-1/2","2-5/8","2-3/4","2-7/8","3","3-1/8","3-1/4","3-3/8","3-1/2","3-5/8","3-3/4","3-7/8","4","4-1/8","4-1/4","4-3/8","4-1/2","4-5/8","4-3/4","4-7/8","5","5-1/8","5-1/4","5-3/8","5-1/2","5-5/8"),
  Array("","","1/16","1/16","3/16","5/16","7/16","9/16","11/16","13/16","15/16","1-1/16","1-3/16","1-5/16","1-7/16","1-9/16","1-11/16","1-13/16","1-15/16","2-1/16","2-3/16","2-5/16","2-7/16","2-9/16","2-11/16","2-13/16","2-15/16","3-1/16","3-3/16","3-5/16","3-7/16","3-9/16","3-11/16","3-13/16","3-15/16","4-1/16","4-3/16","4-5/16","4-7/16","4-9/16","4-11/16","4-13/16","4-15/16","5-1/16","5-3/16","5-5/16","5-7/16","5-9/16"),
  Array("","","","1/16","3/16","5/16","7/16","9/16","11/16","13/16","15/16","1-1/16","1-3/16","1-5/16","1-7/16","1-9/16","1-11/16","1-13/16","1-15/16","2-1/16","2-3/16","2-5/16","2-7/16","2-9/16","2-11/16","2-13/16","2-15/16","3-1/16","3-3/16","3-5/16","3-7/16","3-9/16","3-11/16","3-13/16","3-15/16","4-1/16","4-3/16","4-5/16","4-7/16","4-9/16","4-11/16","4-13/16","4-15/16","5-1/16","5-3/16","5-5/16","5-7/16","5-9/16"),
  Array("","","","","1/16","3/16","5/16","7/16","9/16","11/16","13/16","15/16","1-1/16","1-3/16","1-5/16","1-7/16","1-9/16","1-11/16","1-13/16","1-15/16","2-1/16","2-3/16","2-5/16","2-7/16","2-9/16","2-11/16","2-13/16","2-15/16","3-1/16","3-3/16","3-5/16","3-7/16","3-9/16","3-11/16","3-13/16","3-15/16","4-1/16","4-3/16","4-5/16","4-7/16","4-9/16","4-11/16","4-13/16","4-15/16","5-1/16","5-3/16","5-5/16","5-7/16"),
  Array("","","","","1/16","3/16","5/16","7/16","9/16","11/16","13/16","15/16","1-1/16","1-3/16","1-5/16","1-7/16","1-9/16","1-11/16","1-13/16","1-15/16","2-1/16","2-3/16","2-5/16","2-7/16","2-9/16","2-11/16","2-13/16","2-15/16","3-1/16","3-3/16","3-5/16","3-7/16","3-9/16","3-11/16","3-13/16","3-15/16","4-1/16","4-3/16","4-5/16","4-7/16","4-9/16","4-11/16","4-13/16","4-15/16","5-1/16","5-3/16","5-5/16","5-7/16"),
  Array("","","","","","1/16","3/16","5/16","7/16","9/16","11/16","13/16","15/16","1-1/16","1-3/16","1-5/16","1-7/16","1-9/16","1-11/16","1-13/16","1-15/16","2-1/16","2-3/16","2-5/16","2-7/16","2-9/16","2-11/16","2-13/16","2-15/16","3-1/16","3-3/16","3-5/16","3-7/16","3-9/16","3-11/16","3-13/16","3-15/16","4-1/16","4-3/16","4-5/16","4-7/16","4-9/16","4-11/16","4-13/16","4-15/16","5-1/16","5-3/16","5-5/16")

);

function LoadList() {

  var i;
  var j;
  var s;
  var x;
  var size;

  size=document.sel.threads.options[document.sel.threads.options.selectedIndex].value; 
  for (i=0; i<document.sel.lenlist.length; i++)
    document.sel.lenlist.options[0]=null;

  document.sel.lenlist.options[0]=new Option();

  if (size==99) return;

  for (i=0,j=1; i<grips[size].length; i++) {
    if (grips[size][i].length > 0) {
      s="-"+dash[i]+" ("+nominal[i]+"\" nominal "+grips[size][i]+" grip)";
      document.sel.lenlist.options[j++]=new Option(s,i);
    }
  }
 
}

function GetBolt() {

  var pn;

  pn=anbolts[document.sel.threads.options[document.sel.threads.options.selectedIndex].value];
  if (document.sel.drilledhead.checked) pn=pn+"H";
  if (document.sel.metal.options[document.sel.metal.options.selectedIndex].value==1) pn=pn+"C";

  pn=pn+"-"+dash[document.sel.lenlist.options[document.sel.lenlist.options.selectedIndex].value];
  if (!document.sel.drilledshank.checked) pn=pn+"A";

  document.order.p.value=pn;

}