Here is the code for my webpage :
<html>
<SCRIPT type="text/javascript">
<!--
function DoAction(InputData)
{
alert('Hello') ;
window.open('','Popup','width=200,height=200,scrollbars=no,resizable=no,toolbar=no,directories=no,location=no,menubar=no,status=no,left=0,top=0') ;
self.focus() ;
if (InputData != '')
{
document.forms[0].Data = InputData ;
}
document.forms[0].submit() ;
}
//-->
</SCRIPT>
<body>
<form name="Testform" action="Test.php" method="GET">
<input name="SearchText" value="The Text">
<select name="SearchLocation">
<option>Windhoek</option>
<option selected>Tsumeb</option>
<option>Otjiwarongo</option>
</select>
<input name="Data" type="HIDDEN" value="">
</form>
<a href="#" onclick="DoAction();return false;">Perform Action without data.</a>
<br>
<a href="#" onclick="DoAction(1234567890);return false">Perform Action with data.</a>
</body>
</html>
and the PHP code :
include "SystemResource.inc"
//Generates the HTML data for the main page
$MyData = NULL ;
$MyData = GenerateMainPage() ;
echo $MyData ;
//Generates the HTML data for the pop-up page
$MyData = NULL ;
$MyData = GeneratePopUpPage()
// header(has to go to pop-up window) ;
// echo $MyData