function changeCode() {

// set vars that don't change and initialize others	

var accPrice = 0;
var priceSum = "<b style='font-size:12px; font-weight:bold;'>Pricing:</b>";
var weightSum = "<b style='font-size:12px; font-weight:bold;'>Weight:</b>";


var price = 0;
var accessPrice = 0;
var accessDescrip = "";
var accessoryPrice = 0;

var assemblyWeight = 0;
var accessWeight = 0;
var accessoryWeight = 0;

var MULTIno = 0;

var step1summary = "";
var step2summary = "";
var step3summary = "";

var alertNote = "";

var wirePrice = 0;
var KALprice = 0; 
var KALSprice = 0;

   
    
    // ====================== reset classes of all selection divs and table cells to UN-selected state
    resetKalDivs(); 
	resetMeterDivs();

	// ================= reset summary boxes ==========================
    	document.getElementById('priceSummary').innerHTML = priceSummary;
    	document.getElementById('weightSummary').innerHTML = weightSummary;

		document.getElementById('KALqty').style.display = 'none';
		document.getElementById('WireQtySep').style.display = 'none';
		document.getElementById('accessPriceText').style.display = 'none';


// ================================================ TYPE ====================================================
    if (document.codeform.kal[0].checked) { document.getElementById('kal1').className="selectionChecked"; var kal = "KAL_D06"; var kalDescrip = "Single display for panel mounting"; }
    if (document.codeform.kal[1].checked) { document.getElementById('kal2').className="selectionChecked"; var kal = "KAL_D06_NEMA"; var kalDescrip = "Single display in weatherproof enclosure"; }
    if (document.codeform.kal[2].checked) { document.getElementById('kal3').className="selectionChecked"; var kal = "KAL_D06_LOCK"; var kalDescrip = "Single display in weatherproof enclosure with lockable reset button"; }
    if (document.codeform.kal[3].checked) { document.getElementById('kal4').className="selectionChecked"; var kal = "KAL_D06_DUAL"; var kalDescrip = "Dual displays in weatherproof enclosure"; }
    if (document.codeform.kal[4].checked) { document.getElementById('kal5').className="selectionChecked"; var kal = "KAL_D06_MULTI"; var kalDescrip = "Lockable weatherproof cabinet with clear hinged front door for up to 10 displays<br><span style='color:red;'>digital displays sold separately</span>"; document.getElementById('KALqty').style.display = 'block';}

    var step1summary = kalDescrip;
    document.getElementById('step1summary').innerHTML = step1summary;


//================================================= METER (WIRE) TYPE ==================================================================

if (document.codeform.Wire.checked) {
    if (document.codeform.meter[0].checked) { document.getElementById('meter1').className="selectionChecked"; var meter = "WM"; var WIRE = "WM_C_SRS"; var meterDescrip = "WM, WMH, WM-C, WM-CH, WM-PC, WM-NLC, WM-NLCH multi-jet meters"; }
    if (document.codeform.meter[1].checked) { document.getElementById('meter2').className="selectionChecked"; var meter = "D10"; var WIRE = "D10_C_SRS"; var meterDescrip = "D10 nutating disc positive displacement meters"; }
    if (document.codeform.meter[2].checked) { document.getElementById('meter3').className="selectionChecked"; var meter = "PD"; var WIRE = "WM_PD_REED"; var meterDescrip = "WM-PD low flow piston positive displacement"; }

	var WIREmc = WIRE.replace(/_/g, "-");
}

//---------------------------------------- CALCULATE QTY OF WIRES -----------------------------------------------------------------------

		if (kal == "KAL_D06" || kal == "KAL_D06_NEMA"  || kal == "KAL_D06_LOCK" ) {
			var WireMult = 1;
		}
		if (kal == "KAL_D06_DUAL") {
			var WireMult = 2;
		}
		if (kal == "KAL_D06_MULTI") {
			var WireMult = document.codeform.MULTIno.value;
		}
		var KALqty =  WireMult * document.codeform.qty.value;

	if (document.codeform.WireQty[1].checked){ // --------------------------------- Use Separate Value from WireQtySep Field ------------
		document.getElementById('WireQtySep').style.display = 'block';
		var WIREqty =  document.codeform.WireQtySep.value;
	} else {
		var WIREqty =  KALqty;
	}

	// --------------------------------------------------------- Set all WIRE invisible field values -----------------------

          if (document.codeform.Wire.checked) {
              document.codeform.WIREprice.value = eval(WIRE+".price");
              document.codeform.WIREweight.value = WIREqty * 0.1;
              document.codeform.WIREqty.value = WIREqty;
              document.codeform.WIREprodseries.value = 'for Part No. '+mc;
              document.codeform.WIREprodname.value = 'Pulse_Output_Wire '+WIRE;
              document.codeform.WIREid.value = WIREmc;
              document.codeform.WIREinfo.value = "Pulse Output wire for "+meterDescrip+" series water meters";

              var accessoryDescrip = "Wires:"; // ------------------ add details
          } else {
              document.codeform.WIREprice.value = "";
              document.codeform.WIREweight.value = "";
              document.codeform.WIREqty.value = "";
              document.codeform.WIREprodseries.value = "";
              document.codeform.WIREprodname.value = "";
              document.codeform.WIREid.value = "";
              document.codeform.WIREinfo.value = "";
          }

 // ============================================- END METER (WIRE) TYPE ====================================================================


// ===================== FIGURE KAL Discount ======================


           //---------------------------------------------- Add KALS As Accessories ------------------------------
           //--------------------------------------- (note: it takes the number from a different form field) -----

              if (document.codeform.kal[4].checked) {
                  document.getElementById('KALqty').style.display = 'block';
                  var MULTIno = document.codeform.MULTIno.value;

                    // ================================= SET KAL AS ACCESSORY INFO ===============================================================================

                            document.codeform.KALinfo.value = "KAL-D06 Digital Display for KAL-D06-MULTI";
                            document.codeform.KALid.value = 'KAL-D06';
                            document.codeform.KALprodseries.value = 'for Part No. KAL-D06-MULTI';

                        // ------------------------------------------------------- KAL-D06 PRICE BASED ON QTY --------

                            if (MULTIno == 1 || MULTIno == 2) { // --------------------------------------------- 2 or less at FULL Price ---------

                                KALprice = Math.ceil(KAL_D06.price);

                                document.codeform.KALprice.value = KAL_D06.price;
                                document.codeform.KALweight.value = KAL_D06.weight;
                            }

                            if (MULTIno == 3 || MULTIno == 4 || MULTIno == 5) { // --------------------------------------------- 3 - 5 at 10% off ---------

                                KALprice = KAL_D06.price * 0.9;
								var KALprice = Math.ceil(KALprice);

                                document.codeform.KALprice.value = KALprice;
                                document.codeform.KALweight.value = KAL_D06.weight;
                            }

                            if (MULTIno >= 6 ) { // ----------------------------------------------------------------- 6 or more at 20% off ---------

                                KALprice = KAL_D06.price * 0.8;

						var KALprice = Math.ceil(KALprice);
                                document.codeform.KALprice.value = KALprice;
                                document.codeform.KALweight.value = KAL_D06.weight;
                            }
						
                     // ======================== END SET KAL AS ACCESORY INFO ======================================================================================
	var accessoryDescrip = accessoryDescrip + "KALS:";
              } else {

                            document.codeform.KALinfo.value = "";
                            document.codeform.KALid.value = '';
                            document.codeform.KALprodseries.value = 'for Part No. KAL-D06-MULTI';
                            document.codeform.weight.value = KAL_D06.weight;


				}

	
// ======================================================== SET step 2 summary ==================================================
    
//    document.codeform.CADmc.value=CADmc;

// =========================================================== SET MAIN QTY =============================================

var qty = document.codeform.qty.value;

// =========================================================== SET PRICING =============================================

var mc = kal;

var mc= mc.replace(/_/g, "-");

 // ---------------------- MAIN Product Price (unit price) --------------------------
	// TYPE =--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
if (qty == 1 || qty == 2) {
    var kalPrice = eval(kal+".price");
}
if (qty == 3 || qty == 4 || qty == 5) {
    var kalPrice = eval(kal+".price")*0.9;
}
if (qty >= 6) {
    var kalPrice = eval(kal+".price")*0.8;
}

var kalPrice = Math.ceil(kalPrice);

var kalWeight = eval(kal+".weight");
 //   alert(kalPrice);

	document.getElementById('price').innerHTML=kalPrice;
	document.codeform.price.value=kalPrice;

	var priceSum = priceSum + "<br>Display Price: "+kalPrice+" ("+kal+""+")";
	var weightSum = weightSum + "<br>Display: "+kalWeight+" ("+kal+""+")";

	var fullPrice = kalPrice * qty; // =========== just for when the KAL is the main product main product ------------------
	

 // ---------------------- ACCESSORIES Prices  --------------------------

if (document.codeform.kal[4].checked){ // ------------------------------- KALS (for MULTI ONLY)

	var KALSprice = Math.ceil(KALprice*MULTIno);

	var priceSum = priceSum + "<br><b>Accessories:</b><br>KALS Price: "+KALprice+" x "+MULTIno+" = "+KALSprice+")";
	var weightSum = weightSum +    "<br><b>Accessories:</b><br>Wires: "+KALweight+" x "+MULTIno+")";

	var accessoryPrice = accessoryPrice + KALSprice;
	var accessDescrip = "("+MULTIno + "x) <b>KAL-D06</b> @ $"+KALprice+" = $"+KALSprice+"<br>";

}

if (document.codeform.Wire.checked){ // --------------------------------- WIRES 

	var wirePrice = eval(WIRE+".price")*WIREqty;
	var wireWeight = eval(WIRE+".weight")*WIREqty;

	var priceSum = priceSum + "<br><b>Accessories:</b><br>Wires Price: "+wirePrice+" ("+eval(WIRE+'.price')+" x "+WIREqty+" = "+wirePrice+")";
	var weightSum = weightSum +    "<br><b>Accessories:</b><br>Wires: "+wireWeight+" ("+eval(WIRE+".weight")+" x "+WIREqty+") = "+wireWeight+")";

	var accessoryPrice = accessoryPrice + wirePrice;

	var accessDescrip = accessDescrip + "("+WIREqty + "x) <b>"+WIREmc+"</b> @ $"+eval(WIRE+".price")+" = $"+wirePrice;
}

//alert("wirePrice = " + wirePrice);
//alert("KALSprice = " + KALSprice);
//alert("MULTIno = " + MULTIno);

var accessPrice = wirePrice + KALSprice;

//alert(accessPrice);

   var totalPrice = (fullPrice + accessPrice);
   document.getElementById('totalPrice').innerHTML = totalPrice;

// =========================================================== SET PIC =============================================
	var pic = mc;
    document.getElementById('mainIMG').src = "/digital-pulse-counter/models/"+pic+".jpg";
    document.codeform.imgsrc.value="/digital-pulse-counter/models/"+pic+".jpg";

// =========================================================== SET DESCRIPTION =============================================

    var fullSummary = step1summary + "<br>" + step2summary; // + "<br>"; + step3summary;

	if (alertNote != "") {
    	//alert('oooooops');
    	var fullSummary = fullSummary + "<br>" + alertNote;
    }

    document.getElementById('fullSummary').innerHTML = fullSummary;

	document.codeform.info.value=fullSummary;
	document.codeform.id.value=mc;

	document.getElementById('PN').innerHTML = mc;
	

// ======================================= SHOW ACCESSORIES DESCRIPTION ================================
	if (accessPrice != 0) {
    	document.getElementById('accessPriceText').style.display="block";
    	document.getElementById('accessPrice').innerHTML=accessPrice;
        document.getElementById('accessSummary').innerHTML=accessDescrip;      
    } else {
    	document.getElementById('accessPriceText').style.display="none";
    }

// ======================================= Write Price descriptions to BOMs ================================

    	document.getElementById('priceSummary').innerHTML = "see above";
    	document.getElementById('weightSummary').innerHTML = "see above";

    
}

// ========================================================== END OF MAIN changecode FUNCTION ============================================================


// ============================================================= OTHER FUNCTIONS =========================================================

function addToCart() {
document.codeform.submit();
//	alert ('not quite yet... need to add in pricing');
}


function showHideAccess(item) { 
	if (document.getElementById(item+"BOX").style.display == "none") {
    	document.getElementById(item+"BOX").style.display = "block";
        document.getElementById(item+"HEAD").className = "accessHeadOpen";
        document.getElementById(item).checked = 1;
    } else {
    	document.getElementById(item+"BOX").style.display = "none";
        document.getElementById(item+"HEAD").className = "accessHead";
        document.getElementById(item).checked = 0;
    }
}


function resetKalDivs() {
	document.getElementById('kal1').className="selection";
	document.getElementById('kal2').className="selection";
	document.getElementById('kal3').className="selection";
	document.getElementById('kal4').className="selection";
	document.getElementById('kal5').className="selection";
}

function resetMeterDivs() {
	document.getElementById('meter1').className="selection";
	document.getElementById('meter2').className="selection";
	document.getElementById('meter3').className="selection";
}

function closeStep(step) {
	document.getElementById('step'+step+'close').style.display="none";
	document.getElementById('step'+step+'edit').style.display="block";

	document.getElementById('step'+step+'section').style.display="none";
	document.getElementById('step'+step+'summary').style.display="block";
}


function editStep(step) {
	document.getElementById('step'+step+'close').style.display="block";
	document.getElementById('step'+step+'edit').style.display="none";
    
	document.getElementById('step'+step+'section').style.display="block";
	document.getElementById('step'+step+'summary').style.display="none";    
}

function showInfo(what) {
	if (document.getElementById(what).style.display != "none") {
    	document.getElementById(what).style.display = "none";
            document.getElementById("specsBut").className = "infoTab";
            document.getElementById("descripBut").className = "infoTab";
    } else {
    	if (what == "description") {
 	   		document.getElementById("specs").style.display = "none";
 	   		document.getElementById("description").style.display = "block";
            document.getElementById("descripBut").className = "infoTabSelected";
            document.getElementById("specsBut").className = "infoTab";
        } else {
 	   		document.getElementById("specs").style.display = "block";
 	   		document.getElementById("description").style.display = "none";
            document.getElementById("specsBut").className = "infoTabSelected";
            document.getElementById("descripBut").className = "infoTab";
        }
    }
}