I have a form.
I need to select year, month, day and than send it with submit button.
I need to insert value="" for filter_year, filter_month, filter_date to send with submit button.



<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<title>Untitled Document</title>
</head>

<body>
<div class="box_title">Wann?</div>
<div class="box_content">
<div class="left_data">
<div class="cell"><label for="filter_month" >Von:</label></div>
</div>
<div class="right_data">
<select name="filter_year" id="filter_year_id" onchange="hfcUpdateMonths()"><option>0</option></select>
<select name="filter_month" id="filter_month_id" onchange="hfcUpdateDates()"><option>0</option></select>
<select name="filter_date" id="filter_date_id"><option>0</option></select>
</div>
<form name="booking_0" action="../page.html" method="post">
<input name="filter_duration" value="7" type="hidden">
<input name="setlang" value="en" type="hidden">
<input name="filter_model" value="16" type="hidden">
<input name="filter_year" value="" type="hidden">
<input name="filter_berths" value="" type="hidden">
<input name="flags" value="1" type="hidden">
<input name="filter_heads" value="" type="hidden">
<input name="filter_cabins" value="" type="hidden">
<input name="showgenericmodels" value="true" type="hidden">
<input name="filter_country" value="HR" type="hidden">
<input name="filter_date" value="" type="hidden">
<input name="companyid" value="1211" type="hidden">
<input name="filter_price" value="" type="hidden">
<input name="filter_service_type" value="" type="hidden">
<input name="filter_month" value="" type="hidden">
<input name="filter_yachtage" value="-10000" type="hidden">
<input name="filter_base" value="" type="hidden">
<input name="filter_flexibility" value="on_day" type="hidden">
<input name="filter_region" value="" type="hidden">
<input name="filter_kind" value="" type="hidden">
<input name="filter_length" value="" type="hidden">
<input name="view" value="Booking" type="hidden">
<input name="baseId" value="10" type="hidden">
<input name="yachtId" value="2086380000100109" type="hidden">
<input name="dateFrom" value="" type="hidden">
<input name="dateTo" value="" type="hidden">

<button type="submit">
<table border="0" cellpadding="0" cellspacing="2">
<tbody><tr><td valign="middle"><img src="/include/images/icons/bullet_go.png"></td>
<td>Next</td></tr>
</tbody></table>
</button>

</form>

<script type='text/javascript'>
<!--
var hfcD = new Array();
hfcD[0]={d:20,m:'Oktober (10)',mn:9,y:2012};
hfcD[1]={d:27,m:'',mn:9,y:2012};
hfcD[2]={d:3,m:'November (11)',mn:10,y:2012};
hfcD[3]={d:10,m:'',mn:10,y:2012};
hfcD[4]={d:17,m:'',mn:10,y:2012};
hfcD[5]={d:24,m:'',mn:10,y:2012};
hfcD[6]={d:1,m:'Dezember (12)',mn:11,y:2012};
hfcD[7]={d:8,m:'',mn:11,y:2012};
hfcD[8]={d:15,m:'',mn:11,y:2012};
hfcD[9]={d:22,m:'',mn:11,y:2012};
hfcD[10]={d:29,m:'',mn:11,y:2012};
hfcD[11]={d:5,m:'Januar (1)',mn:0,y:2013};
hfcD[12]={d:12,m:'',mn:0,y:2013};
hfcD[13]={d:19,m:'',mn:0,y:2013};
hfcD[14]={d:26,m:'',mn:0,y:2013};
hfcD[15]={d:2,m:'Februar (2)',mn:1,y:2013};
hfcD[16]={d:9,m:'',mn:1,y:2013};
hfcD[17]={d:16,m:'',mn:1,y:2013};
hfcD[18]={d:23,m:'',mn:1,y:2013};
hfcD[19]={d:2,m:'März (3)',mn:2,y:2013};
hfcD[20]={d:9,m:'',mn:2,y:2013};
hfcD[21]={d:16,m:'',mn:2,y:2013};
hfcD[22]={d:23,m:'',mn:2,y:2013};
hfcD[23]={d:30,m:'',mn:2,y:2013};
hfcD[24]={d:6,m:'April (4)',mn:3,y:2013};
hfcD[25]={d:13,m:'',mn:3,y:2013};
hfcD[26]={d:20,m:'',mn:3,y:2013};
hfcD[27]={d:27,m:'',mn:3,y:2013};
hfcD[28]={d:4,m:'Mai (5)',mn:4,y:2013};
hfcD[29]={d:11,m:'',mn:4,y:2013};
hfcD[30]={d:18,m:'',mn:4,y:2013};
hfcD[31]={d:25,m:'',mn:4,y:2013};
hfcD[32]={d:1,m:'Juni (6)',mn:5,y:2013};
hfcD[33]={d:8,m:'',mn:5,y:2013};
hfcD[34]={d:15,m:'',mn:5,y:2013};
hfcD[35]={d:22,m:'',mn:5,y:2013};
hfcD[36]={d:29,m:'',mn:5,y:2013};
hfcD[37]={d:6,m:'Juli (7)',mn:6,y:2013};
hfcD[38]={d:13,m:'',mn:6,y:2013};
hfcD[39]={d:20,m:'',mn:6,y:2013};
hfcD[40]={d:27,m:'',mn:6,y:2013};
hfcD[41]={d:3,m:'August (8)',mn:7,y:2013};
hfcD[42]={d:10,m:'',mn:7,y:2013};
hfcD[43]={d:17,m:'',mn:7,y:2013};
hfcD[44]={d:24,m:'',mn:7,y:2013};
hfcD[45]={d:31,m:'',mn:7,y:2013};
hfcD[46]={d:7,m:'September (9)',mn:8,y:2013};
hfcD[47]={d:14,m:'',mn:8,y:2013};
hfcD[48]={d:21,m:'',mn:8,y:2013};
hfcD[49]={d:28,m:'',mn:8,y:2013};
hfcD[50]={d:5,m:'Oktober (10)',mn:9,y:2013};
hfcD[51]={d:12,m:'',mn:9,y:2013};
hfcD[52]={d:19,m:'',mn:9,y:2013};
hfcD[53]={d:26,m:'',mn:9,y:2013};
hfcD[54]={d:2,m:'November (11)',mn:10,y:2013};
hfcD[55]={d:9,m:'',mn:10,y:2013};
hfcD[56]={d:16,m:'',mn:10,y:2013};
hfcD[57]={d:23,m:'',mn:10,y:2013};
hfcD[58]={d:30,m:'',mn:10,y:2013};
hfcD[59]={d:7,m:'Dezember (12)',mn:11,y:2013};
hfcD[60]={d:14,m:'',mn:11,y:2013};
hfcD[61]={d:21,m:'',mn:11,y:2013};
hfcD[62]={d:28,m:'',mn:11,y:2013};
hfcSelectedDate = 20;
hfcSelectedMonth = 9;
hfcSelectedYear = 2012;
function hfcSelectOption(hfcSelectElement, hfcValueToSelect)
{
for (count = 0; count < hfcSelectElement.options.length; count++)
{
if (hfcSelectElement.options[count].value == hfcValueToSelect)
{
hfcSelectElement.selectedIndex = count;
return;
}
}
}

function hfcFillDates()
{
hfcLastValue = "";
hfcYearSelect = document.getElementById("filter_year_id");
hfcYearSelect.options.length = 0;
for (count = 0; count < hfcD.length; count++)
{
if (hfcD[count].y != hfcLastValue)
{
hfcYearSelect.options[hfcYearSelect.length] = new Option(hfcD[count].y, hfcD[count].y);
hfcLastValue = hfcD[count].y;
}
}
hfcSelectOption(hfcYearSelect, hfcSelectedYear);
hfcUpdateMonths();
}

function hfcUpdateMonths()
{
hfcLastValue = "";
hfcMonthSelect = document.getElementById("filter_month_id");
hfcMonthSelect.options.length = 0;
hfcYear = document.getElementById("filter_year_id").value;
for (count = 0; count < hfcD.length; count++)
{
if (hfcD[count].y == hfcYear && hfcD[count].m )
{
hfcMonthSelect.options[hfcMonthSelect.length] = new Option(hfcD[count].m, hfcD[count].mn);
hfcLastValue = hfcD[count].m;
}
}
hfcSelectOption(hfcMonthSelect, hfcSelectedMonth);
hfcUpdateDates();
}

function hfcUpdateDates()
{
hfcLastValue = "";
hfcDateSelect = document.getElementById("filter_date_id");
hfcDateSelect.options.length = 0;
hfcYear = document.getElementById("filter_year_id").value;
month = document.getElementById("filter_month_id").value;
for (count = 0; count < hfcD.length; count++)
{
if (hfcD[count].y == hfcYear && hfcD[count].mn == month)
{
hfcDateSelect.options[hfcDateSelect.length] = new Option(hfcD[count].d, hfcD[count].d);
}
}
hfcSelectOption(hfcDateSelect, hfcSelectedDate);
}
hfcFillDates()
//-->
</script>

<script>

//do we need to filter services by country
if (document.forms["box"].filter_country){
value=document.forms["box"].filter_country.value;
if (value!=""){
filtered_country_code=value;filterServices('cc', value, 'si', s, 'filter_service');
}
}

//do we need to filter models per base?
if (document.forms["box"].filter_base){
value=document.forms["box"].filter_base.value;
if (value!=""){
filtered_base_id=value;filterModels('bi', this.value, 'rti', m, 'filter_model')
}
}

</script>


</body>
</html>