Question

When I hit the submit image I get some extra parameters in the GET request:

main.php?selected=user_manager_main&mode=set_active&set_this_id=13&x=4&y=7 

Please note the x and y at the end. I certainly did not define the x and y at the end. The values seem to be random. Here is the form code:

echo '<form action ='main.php' method='get'>'; echo '  <input type='hidden' name='selected' value='user_manager_main' />'; echo '  <input type='hidden' name='mode' value='set_inactive' />'; echo '  <input type='hidden' name='set_this_id' value=''.$row['USER_ID'].'' />'; echo '<input type='image' src='images/delete.gif' alt='Submit' />'; echo '</form>'; 

Any ideas? Thanks!

Answer 1

It’s all ok. Look at:

http://www.w3.org/TR/html401/interact/forms.html#h-17.4.1

When a pointing device is used to click on the image, the form is submitted and the click coordinates passed to the server. The x value is measured in pixels from the left of the image, and the y value in pixels from the top of the image. The submitted data includes name.x=x-value and name.y=y-value where ‘name’ is the value of the name attribute, and x-value and y-value are the x and y coordinate values, respectively.