我的以下代码在选中或未选中复选框时都会发布。当它没有被检查时，我会得到警报然后发布。但是当自动检查它的发布时。
单击提交按钮时，我需要 JavaScript 来发布表单，并且应保持选中复选框。否则它应该只是给我一个警报。但不幸的是，即使未选中复选框并使用提交按钮，页面也会重新加载。
我的代码是
<script type="text/javascript">
function check()
{
if(document.getElementById("privacy").checked == true)
{
document.print.submit();
}
else{
alert('Please read and accept our privacy statments to proceed.');
};
}
</script>
</head>
<body>
<form id="print" action="printfile.php">
<div id="express">
<table width="800">
<tr>
<td colspan="2"><span style="color:#FF0000; font-size:26px;">Express Application</span></td>
</tr>
<tr>
<td width="300"> </td>
<td width="500"> </td>
</tr>
<tr>
<td>First Name (Required) </td>
<td><input name="firstname" type="text" size="30"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Last Name </td>
<td><input name="lastname" type="text" size="30"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Email (Required) </td>
<td><input name="email" type="text" id="email" size="30"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Purpose of finance (Required) </td>
<td><select name="purpose" id="purpose">
<option selected="selected">Home Loan</option>
<option>Refinance</option>
<option>Investment Loan</option>
<option>Debit Consolidation</option>
<option>Others</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Your deposit amount </td>
<td><input name="depositamount" type="text" size="30"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Amount you need to borrow? </td>
<td><input name="borrowamount" type="text" size="30"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Brief description of purpose of <br />
finance (Required) <br />
<br />
<br />
<br />
<br />
<br /></td>
<td><textarea name="purposedesc" cols="60" rows="10" id="purposedesc"></textarea></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Application Type<br />
<br /></td>
<td><label>
<input type="radio" name="apptype" value="Single" onclick="document.getElementById('singleapp').style.visibility = 'visible'; document.getElementById('jointapp').style.visibility = 'hidden';" />
Single Application</label>
<br />
<label>
<input type="radio" name="apptype" value="Joint" onclick="document.getElementById('singleapp').style.visibility = 'visible'; document.getElementById('jointapp').style.visibility = 'visible';" />
Joint Application</label></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td colspan="2"><input name="privacy" type="checkbox" id="privacy" value="checkbox" />
Privacy Act (Required) <br />
<br />
I have read the Privacy Act 1988 (as Amended) and understand that by selecting the submit button I/we authorise Best Aussie Broker to act on my/our behalf and manage personal information in relation to this application. </td>
</tr>
</table>
<br />
Last step then we will get all listed Australian vendors to fight it out for your best deal.<br />
<br />
<table width="800" border="0" style="">
<tr>
<td width="400">
<div id="singleapp">
<table width="400" border="0">
<tr>
<td colspan="2" bgcolor="#333300"><span class="style1">Your application </span></td>
</tr>
<tr>
<td width="150"> </td>
<td width="240"> </td>
</tr>
<tr>
<td>Date of Birth</td>
<td><select name="day1" id="day1">
<option selected="selected">1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
<option>6</option>
<option>7</option>
<option>8</option>
<option>9</option>
<option>10</option>
<option>11</option>
<option>12</option>
<option>13</option>
<option>14</option>
<option>15</option>
<option>16</option>
<option>17</option>
<option>18</option>
<option>19</option>
<option>20</option>
<option>21</option>
<option>22</option>
<option>23</option>
<option>24</option>
<option>25</option>
<option>26</option>
<option>27</option>
<option>28</option>
<option>29</option>
<option>30</option>
<option>31</option>
</select>
<select name="month1" id="month1">
<option selected="selected">Jan</option>
<option>Feb</option>
<option>Mar</option>
<option>Apl</option>
<option>May</option>
<option>Jun</option>
<option>Jul</option>
<option>Aug</option>
<option>Sep</option>
<option>Oct</option>
<option>Nov</option>
<option>Dec</option>
</select>
<input name="year1" type="text" id="year1" style="padding:1.2px;" size="8" maxlength="4" /> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Address</td>
<td><input name="address1" type="text" id="address1" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Suburb</td>
<td><input name="suburb1" type="text" id="suburb1" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>PostCode</td>
<td><input name="postcode1" type="text" id="postcode1" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>State</td>
<td><select name="state1" id="state1">
<option value="Victoria" selected="selected">VIC</option>
<option value="New South Wales">NSW</option>
<option value="QueensLand">QLD</option>
<option value="South Australia">SA</option>
<option value="Western Australia">WA</option>
<option value="Tasmania">TAS</option>
<option value="New Zeland">NZ</option>
<option value="Other">Other</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Best contact </td>
<td><select name="phone1" id="phone1">
<option>Phone</option>
<option>Email</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Phone number </td>
<td><input name="number1" type="text" id="number1" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Marital status </td>
<td><select name="maried1" id="maried1">
<option>Single</option>
<option>Married</option>
<option>Other</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Residential status </td>
<td><select name="rstatus1" id="rstatus1">
<option selected="selected">Renting</option>
<option>Home Owner</option>
<option>Home Mortgaged</option>
<option>Board</option>
<option>Other</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Children/dependents</td>
<td><select name="childs1" id="childs1">
<option value="0" selected="selected">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6 or more">6 or more</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Net income </td>
<td><input name="netincome1" type="text" id="netincome1" size="10"/>
per
<select name="months1" id="months1">
<option>Month</option>
<option>Year</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Current employer </td>
<td><input name="cemployer1" type="text" id="cemployer1" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Time at this<br />
employer </td>
<td> Years
<select name="years1" id="years1">
<option value="1" selected="selected">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
<option value="More">More</option>
</select>
Months
<select name="emonth1" id="emonth1">
<option value="0" selected="selected">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
<option value="11">11</option>
<option value="12">12</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td> </td>
<td><input name="submit" type="submit" value="Submit my Application" onclick="check();" /></td>
</tr>
</table>
</div>
</td>
<td width="400">
<div id="jointapp">
<table width="400" border="0">
<tr>
<td colspan="2" bgcolor="#333300"><span class="style1">Your partner's application </span></td>
</tr>
<tr>
<td width="150"> </td>
<td width="240"> </td>
</tr>
<tr>
<td>Date of Birth</td>
<td><select name="day11" id="day11">
<option selected="selected">1</option>
<option>2</option>
<option>3</option>
<option>4</option>
<option>5</option>
<option>6</option>
<option>7</option>
<option>8</option>
<option>9</option>
<option>10</option>
<option>11</option>
<option>12</option>
<option>13</option>
<option>14</option>
<option>15</option>
<option>16</option>
<option>17</option>
<option>18</option>
<option>19</option>
<option>20</option>
<option>21</option>
<option>22</option>
<option>23</option>
<option>24</option>
<option>25</option>
<option>26</option>
<option>27</option>
<option>28</option>
<option>29</option>
<option>30</option>
<option>31</option>
</select>
<select name="month11" id="month11">
<option selected="selected">Jan</option>
<option>Feb</option>
<option>Mar</option>
<option>Apl</option>
<option>May</option>
<option>Jun</option>
<option>Jul</option>
<option>Aug</option>
<option>Sep</option>
<option>Oct</option>
<option>Nov</option>
<option>Dec</option>
</select>
<input name="year2" type="text" size="8" maxlength="4" style="padding:1.2px;" /> </td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Address</td>
<td><input name="address12" type="text" id="address12" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Suburb</td>
<td><input name="suburb12" type="text" id="suburb12" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>PostCode</td>
<td><input name="postcode12" type="text" id="postcode12" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>State</td>
<td><select name="state12" id="state12">
<option value="Victoria" selected="selected">VIC</option>
<option value="New South Wales">NSW</option>
<option value="QueensLand">QLD</option>
<option value="South Australia">SA</option>
<option value="Western Australia">WA</option>
<option value="Tasmania">TAS</option>
<option value="New Zeland">NZ</option>
<option value="Other">Other</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Best contact </td>
<td><select name="phone11" id="phone11">
<option>Phone</option>
<option>Email</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Phone number </td>
<td><input name="number11" type="text" id="number11" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Marital status </td>
<td><select name="married12" id="married12">
<option>Single</option>
<option>Married</option>
<option>Other</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Residential status </td>
<td><select name="rstatus12" id="rstatus12">
<option selected="selected">Renting</option>
<option>Home Owner</option>
<option>Home Mortgaged</option>
<option>Board</option>
<option>Other</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Children/dependents</td>
<td><select name="childs12" id="childs12">
<option value="0" selected="selected">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6 or more">6 or more</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Net income </td>
<td><input name="netincome12" type="text" id="netincome12" size="10"/>
per
<select name="months12" id="months12">
<option>Month</option>
<option>Year</option>
</select></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Current employer </td>
<td><input name="cemployer12" type="text" id="cemployer12" size="20"/></td>
</tr>
<tr>
<td> </td>
<td> </td>
</tr>
<tr>
<td>Time at this<br />
employer </td>
<td> Years
<select name="years12" id="years12">
<option value="1" selected="selected">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
<option value="More">More</option>
</select>
Months
<select name="emonths12" id="emonths12">
<option value="0" selected="selected">0</option>
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
<option value="6">6</option>
<option value="7">7</option>
<option value="8">8</option>
<option value="9">9</option>
<option value="10">10</option>
<option value="11">11</option>
<option value="12">12</option>
</select></td>
</tr>
</table>
<br />
<br />
<br />
<br />
<br />
</div>
</td>
</tr>
</table>
<p><br />
<br />
<center>
</center>
<br />
</p>
</div>
</form>