T=Array("EP",
"MD",
"MH",
"MP");
P=Array("QUAD",
"TWIN",
"1",
"2",
"3");
A=Array("15",
"15/40/40/15",
"15/50/50/15",
"15/15",
"15/20",
"15/15/15/15",
"15/20/20/15",
"15/30/30/15",
"20",
"20/40/40/20",
"20/50/50/20",
"20/20",
"20/30",
"20/20/20/20",
"20/30/30/20",
"25",
"30/30/30/30",
"30",
"30/50/50/30",
"30/30",
"30/20/20/30",
"35",
"40/30/30/40",
"40/40/40/40",
"40",
"40/20/20/40",
"45",
"50",
"60",
"70",
"80",
"90",
"100",
"110",
"125",
"150",
"175",
"200",
"225");
V=Array("120/240",
"120",
"240");
prods=Array(Array(0,4,34,2),
Array(0,4,34,2),
Array(0,4,35,2),
Array(0,4,35,2),
Array(0,4,36,2),
Array(0,4,36,2),
Array(0,4,37,2),
Array(0,4,37,2),
Array(0,4,38,2),
Array(0,4,38,2),
Array(3,2,0,0),
Array(3,2,0,1),
Array(3,2,0,0),
Array(3,2,8,0),
Array(3,2,8,1),
Array(3,2,8,0),
Array(3,2,15,0),
Array(3,2,17,0),
Array(3,2,17,1),
Array(3,2,17,0),
Array(3,2,24,0),
Array(3,2,24,0),
Array(3,2,27,0),
Array(3,2,27,0),
Array(2,1,3,0),
Array(2,1,3,0),
Array(2,1,4,0),
Array(2,1,11,0),
Array(2,1,11,0),
Array(2,1,12,0),
Array(3,3,32,0),
Array(3,3,32,0),
Array(3,3,33,0),
Array(3,3,34,0),
Array(3,3,34,0),
Array(3,3,0,0),
Array(2,0,5,0),
Array(2,0,5,0),
Array(3,3,0,0),
Array(3,3,0,0),
Array(3,3,8,0),
Array(2,0,6,0),
Array(2,0,13,0),
Array(2,0,13,0),
Array(2,0,20,0),
Array(2,0,25,0),
Array(3,3,8,0),
Array(3,3,8,0),
Array(3,3,15,0),
Array(3,3,17,0),
Array(2,0,7,0),
Array(2,0,14,0),
Array(2,0,16,0),
Array(2,0,22,0),
Array(3,3,17,0),
Array(3,3,17,0),
Array(3,3,21,0),
Array(3,3,24,0),
Array(2,0,1,0),
Array(2,0,9,0),
Array(2,0,23,0),
Array(3,3,24,0),
Array(3,3,24,0),
Array(3,3,26,0),
Array(3,3,27,0),
Array(2,0,2,0),
Array(2,0,10,0),
Array(2,0,18,0),
Array(3,3,27,0),
Array(3,3,27,0),
Array(3,3,28,0),
Array(3,3,28,0),
Array(3,3,28,0),
Array(3,3,29,0),
Array(3,3,29,0),
Array(3,3,30,0),
Array(3,3,30,0),
Array(3,3,31,0),
Array(3,3,31,0),
Array(2,1,19,0),
Array(3,4,32,2),
Array(3,4,32,2),
Array(3,4,0,2),
Array(3,4,0,2),
Array(3,4,8,2),
Array(3,4,8,2),
Array(3,4,17,2),
Array(3,4,17,2),
Array(3,4,24,2),
Array(3,4,24,2),
Array(3,4,27,2),
Array(3,4,27,2),
Array(3,4,28,2),
Array(3,4,28,2),
Array(3,4,29,2),
Array(3,4,29,2),
Array(3,4,30,2),
Array(3,4,31,2),
Array(1,3,35,0),
Array(1,3,35,0),
Array(1,3,36,0),
Array(1,3,36,0),
Array(1,3,37,0),
Array(1,3,37,0),
Array(3,3,8,2),
Array(3,3,17,2),
Array(3,3,28,2),
Array(3,3,29,2),
Array(3,3,35,0),
Array(3,3,36,0),
Array(3,3,37,0),
Array(2,2,0,0),
Array(2,2,8,0),
Array(2,2,17,0),
Array(2,2,24,0),
Array(2,2,27,0),
Array(2,3,0,0),
Array(2,3,8,0),
Array(2,3,17,0),
Array(2,3,24,0),
Array(2,3,27,0));
function defselect(sbox, string) {
  var si = sbox.selectedIndex;
  for (var i = sbox.options.length - 1; i >= 0; i--) {
    sbox.options[i] = null;
    sbox.options[0] = new Option(string, 0);
  }
  sbox.options[0].selected = true;
}
    
function getSelection(sbox) {
  var a = Array();
  var j = 0;
  if (sbox.options[0].selected) 
    return a;

  for (i = 1; i < sbox.options.length; i++) {
    if (sbox.options[i].selected) {
      a[j++] = sbox.options[i].value;
    }
  }
  return a;
}

// a contains the ID, d contains the descriptions, E is the index
function contains(a, d, is_array, e) {
  if (a.length == 0) return true;
  if (is_array) {
    for(j=0;j<a.length;j++)if(a[j]==d[e][1]) return true;
  } else {
    for(j=0;j<a.length;j++)if(a[j]==d[e])return true;
  }
  return false;
}

function numOrdA(a, b){ return (a-b); }

function setSelection(sbox, name, describe, index, sel1, sel2, sel3, sel4, isSelf) {
  var si = sbox.selectedIndex;
  var j = 0, opts = Array();
  var orig = Array();
  var z = 0;
  var selIdx = 0;

  for (var x = 0; x < sbox.options.length; x++) {
    if (sbox.options[x].selected) 
      orig[z++] = sbox.options[x].value;
  }
 
  var hash = Array();
  for (var i = 0; i < prods.length; i++) {  
    if (hash[prods[i][index]] == 1) continue;
    if (contains(sel1, T, false, prods[i][0]) &&
        contains(sel2, P, false, prods[i][1]) && 
        contains(sel3, A, false, prods[i][2]) &&
        contains(sel4, V, false, prods[i][3])) {
          /* add this item, if not already added */
          opts[j++] = prods[i][index];
          hash[prods[i][index]] = 1;
    }
  }
  opts.sort(numOrdA);

  if (isSelf && opts.length < sbox.options.length) return;

  for (var i = sbox.options.length - 1; i >= 0; i--)
    sbox.options[i] = null;
  sbox.options[0] = new Option("All " + name + " ------", 0);
  sbox.options[1] = new Option("Don't Know", -1);
  if (orig.length == 0 || orig[0] == 0) sbox.options[0].selected = true;
  if (orig.length == 1 && orig[0] == -1) sbox.options[1].selected = true;

  for (j = 0; j < opts.length; j++) {
    var value = "";
    sbox.options[j+2] = new Option(describe[opts[j]], describe[opts[j]]);
    value = describe[opts[j]];
    for (x = 0; x < orig.length; x++) {
      if (value == orig[x]) break;
    }
    if (x != orig.length) {
      sbox.options[j+2].selected = true;
    }
  }
}

function propagate(src) {
  var types = document.forms["srch"].types;
  var poles = document.forms["srch"].poles;
  var amps = document.forms["srch"].amperages;
  var volts = document.forms["srch"].voltages;

  if (src == "") {
    types.selectedIndex = poles.selectedIndex = amps.selectedIndex = volts.selectedIndex = 0;
    setSelection(types, "Types", T, 0, Array(), Array(), Array(), Array(), 0);
    setSelection(poles, "Poles", P, 1, Array(), Array(), Array(), Array(), 0);
    setSelection(amps, "Amperages", A, 2, Array(), Array(), Array(), Array(), 0);
    setSelection(volts, "Voltages", V, 3, Array(), Array(), Array(), Array(), 0);

/*
    setSelection(types, "Types", T, 0, Array(), Array(), Array());
    defselect(poles, "All Poles ------");
    defselect(amps, "All Amperages ------");
    defselect(volts, "All Voltages ------");
*/
  } else {

  var sel1 = getSelection(types);
  var sel2 = getSelection(poles);
  var sel3 = getSelection(amps);
  var sel4 = getSelection(volts);
  if ((sel1.length == 1 && sel1[0] <= 0)||(sel1.length==2&&sel1[0]<=0&&sel1[1]<=0)) sel1 = Array();
  if ((sel2.length == 1 && sel2[0] <= 0)||(sel2.length==2&&sel2[0]<=0&&sel2[1]<=0)) sel2 = Array();
  if ((sel3.length == 1 && sel3[0] <= 0)||(sel3.length==2&&sel3[0]<=0&&sel3[1]<=0)) sel3 = Array();
  if ((sel4.length == 1 && sel4[0] <= 0)||(sel4.length==2&&sel4[0]<=0&&sel4[1]<=0)) sel4 = Array();

  setSelection(types, "Types", T, 0, sel1, sel2, sel3, sel4, src=="types");
  setSelection(poles, "Poles", P, 1, sel1, sel2, sel3, sel4, src=="poles");
  setSelection(amps, "Amperages", A, 2, sel1, sel2, sel3, sel4, src=="amperages");
  setSelection(volts, "Voltages", V, 3, sel1, sel2, sel3, sel4, src=="voltages");
  }
}

function resetsearch() {
  var types = document.forms["srch"].types;
  var poles = document.forms["srch"].poles;
  var amps = document.forms["srch"].amperages;
  var volts = document.forms["srch"].voltages;

//  types.selectedIndex = poles.selectedIndex =
//  amps.selectedIndex = volts.selectedIndex = 0;
}