Forms and PHP

[Anon]

I have the following code which enables a user to move through a series of questions.
The previous and next buttons are provided by using images and a bit of java script to indicate which image was clicked.

<?
// Start the session variables

require "../include/start.inc";

If (!isset($CurrentAspectCategoryID)) {
$CurrentAspectCategoryID = 1;
}

echo "Current Aspect Category = $CurrentAspectCategoryID<BR>";

if ($selbutton == "next") {
$CurrentAspectCategoryID++;
}

if ($selbutton == "prev") {
$CurrentAspectCategoryID--;
}

echo "Current Aspect Category = $CurrentAspectCategoryID";
?>
<FORM METHOD="POST" NAME="AspectStatements" ACTION="testprofile.php">
<INPUT TYPE="image" NAME="previous" SRC="aspect_imgs/previous.gif" onclick="javascript:this.form.selbutton.value='prev'; this.form.submit();">
<INPUT TYPE="image" NAME="next" SRC="aspect_imgs/next.gif" onclick="javascript:this.form.selbutton.value='next'; this.form.submit();">
<INPUT NAME="selbutton" TYPE="hidden" VALUE="">
</FORM>

The problem is that using IE5.5 incrementing the numbers using the next button is not consistant, i.e. it sometimes increments the number while advancing by 2

In stark contrast Netscape 6 works find the number increment and decrement correctly.

Could some please try the above code or tell where I am going wrong.

Many Thanks

Bob

[Anon]

You don't need javascript to determine which button has been clicked. Try this in your testprofile.php file:

if (isset($HTTP_POST_VARS["next_x"])) {
$CurrentAspectCategoryID++;
}

if (isset($HTTP_POST_VARS["previous_x"])) {
$CurrentAspectCategoryID--;
}