Changing content of SELECT without post

[mamil]

Hi all,
I'm trying to prepare page which includes a form containing two SELECT lists. Available options in both lists are generated based on results of sql query. Available options in second SELECT should change after change of selected option in first one. I know that it should be done using Javascript (OnChange)
but I have no experience in writing PHP scripts communicating with JS. Any help would be very appreciated,

Mamil

[Anon]

The JavaScript script is just as much a part of the page as the HTML itself - PHP can write script in exactly the same way it writes markup.

If, for example, you want to set a Javascript variable from within PHP you can go

<?
print("var jsvariable = $phpvariable;");
?>

You can use loops to write entire Javascript arrays a la

<?
print('var jsarray = new Array(');
...loop through and print array elements...
print(');');
?>