there's a calculator I do not see to work , can you help ?

[leonidassavvides]

js Q:
there's a calculator on booking form at
http://www.holidayaptsaspasia.com/bookingapt.html
I do not see to work , can you help ?
design Q:
Also menu on top I want it (and I setup it right alignment) why exist some distance ?

[leonidassavvides]

Also do NOT work the onsubmit="return submitForm();" (same page) ? check source...
the onreset work .

[leonidassavvides]

code below is for calculator at(body):

<input type="button" name="button6" id="button6" value="Calculate Total" onclick="calc();"/>

is it correct ?
head:

<title>Booking Form</title>
<script type="text/javascript">
function calc() {
 if (document.book.ac2.checked == "true") {   // does not work either with  == true
    var ac = 6;
 } else {
    ac = 0; 	
 } 
 // ac = 6; if (parseInt(document.book.month.value) > 3 && parseInt(document.book.month.value) < 11) {

 if ((document.book.month.value) > 3 && (document.book.month.value) < 11) {
    var rate = 41;   // rate for two Summer
 } else {
    rate = 35;	
 }
 if (parseInt(document.book.adults.value % 3) == 0) {
    var not3 = 0;
 } else {
    not3 = 1; 	
 } 
 var tsp1 = new Date(document.book.year.value,document.book.month.value-1,document.book.day.value);
 var tsd1 = new Date(document.book.toyear.value,document.book.tomonth.value-1,document.tobook.day.value);  
 var tsp = tsp1.getTime();
 var tsd = tsd1.getTime();
 // tsp = tsp1.valueOf();
 // tsd = tsd1.valueOf();
 var days1;
 days1 = ($tsd - $tsp)/(24*60*60); 
 // document.book.euro.value = 99;
 document.book.days.value = days1; //days1
 var eurocost = days1 * (Math.floor(parseFloat(document.book.adults.value) / 3) * (6 + rate + ac) + not3 * (rate + ac));
 // document.book.euro.value = days1 * (Math.floor(parseFloat(document.book.adults.value) / 3) * (6 + rate + ac) + not3 * (rate + ac));
 document.book.euro.value = eurocost;
 alert(days1);
 alert(eurocost);
 //x = floor((document.book.adults.value)/3)
 //document.book.euro.value = document.book.days.value * (x * (47+ac) + 41 + ac) ;
}
</script>

code below is for the onsubmit="return submitForm();" (same page) , does not work ?

function submitForm() {
 if (document.book.email.value == "") {
    window.alert("You must enter your email address to submit form!");
	return false;
 }
 var startDate = new Date(document.book.year.value,document.book.month.value-1,document.book.day.value);   //  var startDate = new Date(document.forms[0].year.value,document.forms[0].month.value,document.forms[0].day.value);
 var endDate = new Date(document.book.toyear.value,document.book.tomonth.value-1,document.book.today.value);   //  var endDate = new Date(document.forms[0].toyear.value,document.forms[0].tomonth.value,document.forms[0].today.value);

 if (startDate.getTime() > endDate.getTime()) {   //  startDate.valueof() > endDate.valueof()
    window.alert("You must enter Start Date prior End Date to submit form!");
	return false;
 }
 else 
    return true;
}  // end function   p261 gosselin book
</script>