function changeCode(){ 
        var mc = "";
        var err = "";
        var ser = "";
        var price = "";
        var failpos = "";
        var acttype = "";
        var solprice = 0;
        var solweight = 0;
        var solvoltage = "";
        var siz = "";
        var psi = "";
        var lim = "";
        var pic = "VA";
        var infotext = "";
        var bodymat = "Brass (Nickel Plated)";
        var sizedescrip = "";
        var condescrip = "NPT (female)";
        var infoflo = "";
        var seatmat = "";
        var sealmat = "";
        var soldescrip = "";
        var solvoltage = "";
        var solt = "";
        var sol = "";
        var solv = "";
        var limdescrip = "";
        var actdescrip = "";

        document.codeform.price.value = "";

        if (document.codeform.size[0].checked) {var siz = "037" ; var sizedescrip = size_037};
        if (document.codeform.size[1].checked) {var siz = "050" ; var sizedescrip = size_050};
        if (document.codeform.size[2].checked) {var siz = "075" ; var sizedescrip = size_075};
        if (document.codeform.size[3].checked) {var siz = "100" ; var sizedescrip = size_100};
        if (document.codeform.size[4].checked) {var siz = "125" ; var sizedescrip = size_125};
        if (document.codeform.size[5].checked) {var siz = "150" ; var sizedescrip = size_150};
        if (document.codeform.size[6].checked) {var siz = "200" ; var sizedescrip = size_200};

        if (document.codeform.actuator[0].checked) {var act = "C"; var psi="60"; var actdescrip = "Spring Return Pneumatic Actuator"; var failpos=" fail CLOSED"; var solt = "E"};
        if (document.codeform.actuator[1].checked) {var act = "O"; var psi="60"; var actdescrip = "Spring Return Pneumatic Actuator"; var failpos="fail OPEN"; var solt = "E"};
        if (document.codeform.actuator[2].checked) {var act = "D"; var psi="40"; var actdescrip = "Double Acting Pneumatic Actuator"; var solt = "C"};

// Solenoids ---------------------------
        if (document.codeform.solenoid[0].checked) {var solc = ""};
        if (document.codeform.solenoid[1].checked) {var solc = "3"};
        if (document.codeform.solenoid[2].checked) {var solc = "4"};
        if (document.codeform.solenoid[3].checked) {var solc = "5"};
        if (document.codeform.solenoid[4].checked) {var solc = "6"};
        if (document.codeform.solenoid[5].checked) {var solc = "2"};
		
        if (document.codeform.solenoidv[0].checked) {var solv = "A"; var solvoltage="120 VAC"};
        if (document.codeform.solenoidv[1].checked) {var solv = "B"; var solvoltage="24 VDC"};
        if (document.codeform.solenoidv[2].checked) {var solv = "F"; var solvoltage="12 VDC"};

	
	if (solc!=""){var sol=solt+solc+solv; var solpic=solt+solc;}
			
		
        if (document.codeform.seal[0].checked) {var sel = "VV"; var sealmat = "Viton"};
        if (document.codeform.seal[1].checked) {var sel = "EE"; var sealmat = "EPDM"};
        if (document.codeform.seal[2].checked) {var sel = "BB"; var sealmat = "BUNA-N (SPECIAL ORDER 4-8 WEEKS)"};
	
        var mc = siz+"VA"+act+sel+sol;
        var cadmc = siz+"VA";
   
if (act == "C" || act == "O") {
    if (siz == "037"){ var price = sr_price_037; var weight=weight_037}
    if (siz == "050"){ var price = sr_price_050; var weight=weight_050}
    if (siz == "075"){ var price = sr_price_075; var weight=weight_075}
    if (siz == "100"){ var price = sr_price_100; var weight=weight_100}
    if (siz == "125"){ var price = sr_price_125; var weight=weight_125}
    if (siz == "150"){ var price = sr_price_150; var weight=weight_150}
    if (siz == "200"){ var price = sr_price_200; var weight=weight_200}
}
if (act == "D") {
    if (siz == "037"){ var price = da_price_037; var weight=weight_037}
    if (siz == "050"){ var price = da_price_050; var weight=weight_050}
    if (siz == "075"){ var price = da_price_075; var weight=weight_075}
    if (siz == "100"){ var price = da_price_100; var weight=weight_100}
    if (siz == "125"){ var price = da_price_125; var weight=weight_125}
    if (siz == "150"){ var price = da_price_150; var weight=weight_150}
    if (siz == "200"){ var price = da_price_200; var weight=weight_200}
}

		

// solenoid pricing, weight, & description

	
		if (sol !=''){
		  var solbeg2 = sol.substring(0, 2);
	      var solprice = eval('sol_'+solt+solc+'_price');
	      var solweight = eval('sol_'+solt+solc+'_weight');
	      var soldescrip = (eval('sol_'+solt+solc+'_descrip'))+" "+solvoltage;
	    }

var price = Math.round(price+solprice);
var weight = weight+solweight;
if (siz == ""){var pic = "VA"; var price = ""; var mc = "Select Size"}



if (mc == "Select Size"){ 	
	document.getElementById("add").disabled=true;
	document.getElementById("add").className="BUTTOND";
} else {
	document.getElementById("add").disabled=false;
	document.getElementById("add").className="BUTTON";
}

if (sol != ""){
    var pic = solt+"3";
	if (solc == "2"){var pic = solt+"2";}

	}

// DESCRIPTIONS

       var infotext = "<b> Body Material: </b>"+bodymat+"<br>"+
                       "<b> Size & Connection: </b>"+sizedescrip+" "+condescrip+"<br>"+
                       "<b> Seals: </b>"+sealmat+"<br>"+
                       "<b> Actuator: </b>"+actdescrip+failpos+"<br>"+
					   "(sized for using "+psi+"psi supply air in applications up to 150psi DP)";

            var infotext = infotext + "<br>";
			
                     //   "<b> Flow Plan: </b>"+infoflo+"<br>"+

		if (soldescrip != "") {
			var infotext = infotext +"<b>Actuator Solenoid: </b>"+soldescrip+"<br>";}



        document.codeform.price.value = price;  
		document.getElementById('listprice').innerHTML = price;
		if (price != "") {
			var qty = document.codeform.qty.value;
			var unit = document.codeform.price.value;
			var extprice = unit * qty;
			document.getElementById('extendedPrice').innerHTML= extprice;
		} else {
			document.getElementById('extendedPrice').innerHTML= "";
		}
	

        document.codeform.modelcode.value = mc;
		document.getElementById('PN').innerHTML = mc;
		
		        document.codeform.imgsrc.value = "/VA/models/"+pic+".jpg";

        document.codeform.id.value = mc;
        document.codeform.info.value = infotext;
        document.codeform.weight.value = weight;
        document.codeform.cadcode.value = cadmc;
		
		document.getElementById('infospan').innerHTML = "<table class='small'><tr><td align='left'><span class='Headertextcart'>VA Series Compact On/Off Valve</span><br>"+infotext+"</td></tr></table>";




var imgVA = new Image();
imgVA.src = "models/"+pic+".jpg";

        document.images[ "mainimg" ].src = eval( "imgVA.src" )
}