Search when pressing enter

When I press enter on the webpage it wont search, only when the button is clicked.

<?php if ($keyword) { ?>
<input type="text" value="<?php echo $keyword; ?>" id="filter_keyword" />
<?php } else { ?>
<input type="text" value="<?php echo $text_keyword; ?>" id="filter_keyword" onclick="this.value = '';" onkeydown="this.style.color = '000000'" style="color: #999;" />
<?php } ?>
<a onclick="moduleSearch();"><img src="catalog/view/theme/ProShop/image/search_button.png" alt="search" align="top" /></a></div>

Not sure what to do, hope you can help.

Thanks, Bevans.

I don't see the post method anywhere.

<form action="page.php" method="post">
//Text boxes, submit button, etc
</form>

That way you can type in the box and press enter.

This is their problem:


<a onclick="moduleSearch();">


Not surprising it doesn't catch a key press. This should be in the JS section, btw.

http://w3schools.com/jsref/dom_obj_all.asp