function selectModel(pn) {

	var size = pn.substr(0, 7);
	var access = pn.substr(7);
//	alert(size);
//	alert(voltage);

	var extras = pn.substr(9);    
//	alert(extras);

//----------------------------------- SELECT SIZE ----------------------------	
	if (size == "EV1S1V1") {
		document.codeform.size[0].checked=true;
	}
	if (size == "EV1S3V8") {
		document.codeform.size[1].checked=true;
	}
	if (size == "EV1S3V9") {
		document.codeform.size[2].checked=true;
	}
	if (size == "EV3S2V1") {
		document.codeform.size[3].checked=true;
	}
	if (size == "EV3S1V1") {
		document.codeform.size[4].checked=true;
	}
	if (size == "EV3S3V8") {
		document.codeform.size[5].checked=true;
	}
	if (size == "EV3S3V9") {
		document.codeform.size[6].checked=true;
	}

//----------------------------------- Just C2 ----------------------------	
if (access.length == 2 || access.length == 11) {
	document.codeform.xs.checked=true;
	showHideAccess('xs');
}

if (access.length == 11 || access.length == 9) {
	document.codeform.mod.checked=true;
	showHideAccess('mod');
    
//----------------------------------- C2 & T1 ----------------------------	
	if (access.length == 11) {
    	var type = access.substr(5);
        alert(type);
        if (type == "EP420C") {
			document.codeform.posType[0].checked=true;
        }
        if (type == "EP420O") {
			document.codeform.posType[0].checked=true;
            document.codeform.modHigh.checked = true;
        }
        if (type == "EP010C") {
			document.codeform.posType[1].checked=true;
        }
        if (type == "EP010O") {
			document.codeform.posType[1].checked=true;
            document.codeform.modHigh.checked = true;
        }
    }

//----------------------------------- Just T1 ----------------------------	
	if (access.length == 9) {
    	var type = access.substr(3);
        alert(type);
        if (type == "EP420C") {
			document.codeform.posType[0].checked=true;
        }
        if (type == "EP420O") {
			document.codeform.posType[0].checked=true;
            document.codeform.modHigh.checked = true;
        }
        if (type == "EP010C") {
			document.codeform.posType[1].checked=true;
        }
        if (type == "EP010O") {
			document.codeform.posType[1].checked=true;
            document.codeform.modHigh.checked = true;
        }
    }
    
}


changeCode();
}

function changeCode() {

// set vars that don't change and initialize others	
var voltage = "";
var size = "";
var solCon = "";

var actDescrip = "<b>Actuator Type:</b> Low-Cost, Compact, Industrial Electric, Quarter-turn<br><b>Enclosure:</b> Epoxy coated aluminum cover and zinc alloy base<br><b>Electrical Connection:</b> One 1/2&quot; NPT with pre-wired leads";
var sizeDescrip = "";
var sealDescrip = "";
var limDescrip  = "";
var posDescrip  = "";
var solConDescrip = "";
var solVoltDescrip = "";
var solTypeDescrip = "";
var solRatingDescrip = "";
var accessDescrip = ""; // ----------- actuator accesories on assembly
var accessoryDescrip = "";	// ------- accesories that ship loose

var voltDescrip= "";
var actpic = "";
var solpic = "";
var limpic = "";
var pospic = "";
var failPos = "";

var modDescrip = "";
var xsDescrip = "";
var modFail = "";
var modSig = "";
var modSignal = "";

var mod = "";
var xs = "";

var torque = "";

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 limPrice = 0;
var limWeight = 0;

var solPrice = 0;
var solWeight = 0;

var posPrice = 0;
var posWeight = 0;

var price = 0;
var accessPrice = 0;
var accessoryPrice = 0;

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

var actcad = "";

var S4mod = "";
var S4bat = "";
var S4din = "";
var s4kitName = "";

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

var alertNote = "";
    
    // ====================== reset classes of all selection divs and table cells to UN-selected state
    resetSizeDivs(); 

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


    
// ================================================ SIZE ====================================================
    if (document.codeform.size[0].checked) { document.getElementById('size1').className="selectionChecked"; var siz = "EV1S1V1"; var torque = "125"; var ISO = "F03/05"; var stem = "14"; var speed = "3"; var voltDescrip = "120VAC"; var duty = "75";
    }
    
    if (document.codeform.size[1].checked) { document.getElementById('size2').className="selectionChecked"; var siz = "EV1S3V8"; var torque = "125"; var ISO = "F03/05"; var stem = "14"; var speed = "3"; var voltDescrip = "12VDC"; var duty = "100";
    }
    
    if (document.codeform.size[2].checked) { document.getElementById('size3').className="selectionChecked"; var siz = "EV1S3V9"; var torque = "125"; var ISO = "F03/05"; var stem = "14"; var speed = "3"; var voltDescrip = "24VDC"; var duty = "100";
    }
    
    if (document.codeform.size[3].checked) { document.getElementById('size4').className="selectionChecked"; var siz = "EV3S2V1"; var torque = "300"; var ISO = "F03/05";  var stem = "14"; var speed = "7"; var voltDescrip = "120VAC"; var duty = "25";
    }
    
    if (document.codeform.size[4].checked) { document.getElementById('size5').className="selectionChecked"; var siz = "EV3S1V1"; var torque = "300"; var ISO = "F03/05"; var speed = "7"; var stem = "14"; var voltDescrip = "120VAC"; var duty = "75";
    }
    
    if (document.codeform.size[5].checked) { document.getElementById('size6').className="selectionChecked"; var siz = "EV3S3V8"; var torque = "300"; var ISO = "F03/05"; var speed = "6"; var stem = "14"; var voltDescrip = "12VDC"; var duty = "100";
    }

    if (document.codeform.size[6].checked) { document.getElementById('size7').className="selectionChecked"; var siz = "EV3S3V9"; var torque = "300"; var ISO = "F03/05"; var speed = "6"; var stem = "14"; var voltDescrip = "24VDC"; var duty = "100";
    }

// ================================================= OPTIONS =============================================

	if (document.codeform.xs.checked) {
     //   alert('Xtra switches');

 	    var xsDescrip = "<b>Extra Switches: </b> 2 extra SPDT limit switches"; 
    }


    
// ================================================= ACTUATORS =============================================
    
	var sizeDescrip = "<b>Torque: </b>"+torque+" in/lbs.";
    var voltDescrip = "<b>Voltage: </b> "+voltDescrip;
    var isoDescrip = "<b>Direct Mount Valve Mounting Pattern: </b> "+ISO;
    var stemDescrip = "<b>Stem Square: </b> "+stem + "mm";
    var speedDescrip = "<b>Speed: </b> "+speed+" sec.";
    var dutyDescrip = "<b>Duty Cycle: </b> "+duty+"%";
    var limitDescrip = "<b>Limit Switches: </b> Two end of travel, non-isolated contacts";
        
    var step1summary = actDescrip + "<br>" + sizeDescrip + "<br>" + limitDescrip + "<br>" + voltDescrip + "<br>" + dutyDescrip  + "<br>" + isoDescrip  + "<br>" + stemDescrip  + "<br>" + speedDescrip;
    

if (xsDescrip != "") {
}

if (xsDescrip != "") {
	var step2summary = xsDescrip;
    var xs = "C2";
}    

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


// ======================================================== SET step 2 summary ==================================================


	var actDescrip = "<b>Actuator: </b>"+actDescrip+" ("+siz+")";    
    
    if (accessoryDescrip != "") {
    	if (step2summary != "") {
        	var step2summary = step2summary + "<br>" + accessoryDescrip;
        } else {
        	var step2summary =  accessoryDescrip;
        }
    }
        
     if (step2summary == "") {
     	var step2summary = "none selected";
     }	   
        
    document.getElementById('step2summary').innerHTML = step2summary;



// =========================================================== SET MODEL CODE =============================================
    
	var mc=siz+xs; 

    var CADmc=siz;

	var pic = "V4";

	document.getElementById('PN').innerHTML =mc;
    document.codeform.id.value=mc;
	document.getElementById('MClinks').innerHTML =mc;
    document.getElementById('mainIMG').src = "/V4-electric-actuators/models/V4.jpg";
    document.codeform.imgsrc.value="/V4-electric-actuators/models/V4.jpg";
    

    //----------- SET Dimension & Wiring Diagram PAGE =-=-------------------------
    	document.codeform.wireDiagPage.value = "/literature/V4_datasheet.pdf#page=2";
    	document.codeform.dimPage.value = "/literature/V4_datasheet.pdf#page=2";
    
    
    


    
 //   document.codeform.CADmc.value=CADmc;
// =========================================================== SET PRICING =============================================

var qty = document.codeform.qty.value;
 

	// ACTUATOR =--=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
    var actName = siz;
    var actPrice = eval(actName+".price");
    var actWeight = eval(actName+".weight");
    	var priceSum = priceSum + "<br>Actuator Price: "+actPrice+" ("+actName+")";
    	var weightSum = weightSum + "<br>Actuator: "+actWeight+" ("+actName+")";

        	 if (document.codeform.xs.checked) {
	    		var priceSum = priceSum + "<br>V2X (2 xtra SPDT): "+V2X.price+" (V2X)";
		    	var weightSum = weightSum + "<br>V2X (2 xtra SPDT): "+V2X.weight+" (V2X)";
	            var actPrice = actPrice + V2X.price;
	            var actWeight = actWeight + V2X.weight;
	         }



		
 
 	// LABOR =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
    
    var fullPrice = Math.ceil(actPrice);
    var fullWeight = Math.ceil(actWeight);
    
   document.getElementById('price').innerHTML = fullPrice;
   document.codeform.price.value=fullPrice;
   document.codeform.weight.value=fullWeight;
   
   document.getElementById('priceSummary').innerHTML = priceSum;
   document.getElementById('weightSummary').innerHTML = weightSum+"<br><b>TOTAL: </b>"+fullWeight+" lbs.";
   
   var totalPrice = (fullPrice + accessoryPrice) * qty;
   
   document.getElementById('totalPrice').innerHTML = totalPrice;


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

    var fullSummary = step1summary;

	if (step2summary != "none selected") {
	    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;

	if (accessoryPrice != 0) {
    	document.getElementById('accessoryPriceText').style.display="block";
    	document.getElementById('accessoryPrice').innerHTML=accessoryPrice;
        document.getElementById('accessorySummary').innerHTML=accessoryDescrip;        
      
    } else {
    	document.getElementById('accessoryPriceText').style.display="none";
    }
    
}

// ================================================== 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 resetSizeDivs() {
	document.getElementById('size1').className="selection";
	document.getElementById('size2').className="selection";
	document.getElementById('size3').className="selection";
	document.getElementById('size4').className="selection";
	document.getElementById('size5').className="selection";
	document.getElementById('size6').className="selection";
	document.getElementById('size7').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";
        }
    }
}