Hi Guys

I have just started designing and building the quote system for a client. One of the features of the system us that once a customer clicks on one of the radio buttons it displays that nuber of field boxes, example if one is clicked they show 2 text boxes one for width one for height, if 2 is click then 4 is shown and so on.

However if the customer clicks custom it brings up one box and the customer has to enter the number he/she wants. Problem I'm having is that when i click one all of the boxes show for all of the radio buttons.

I'm a bit stuck I've published the code, can anyone help me?

Code HTML4Strict:
<form id="form1" name="form1" method="post" action="">
  <p>
    <input name="option1" type="radio" value="1" />
  Option 1</p>
  <p>
  <input name="option2" type="radio" value="2" />
  Option 2</p>
  <p>
    <input name="option3" type="radio" value="3" /> 
  Option 3</p>
  <p>
  <input name="option4" type="radio" value="custom" /> 
  Option 4</p>
  <p>
    <input type="submit" name="submit" value="choice" />
  </p>
</form>

PHP Code:

<?php 
if (isset($_POST['submit'])) {
    
$selected_radiobutton $_POST['option1'];
    print 
"<img src=images/1.jpg width=151 height=153 />
    <form name=form1 id=form action= >
            <label>Width(mm)</label><input type=text name=width /><br />
            
            <label>Height</label><input type=text name=height />
            
            </form>"
;

else if (isset(
$_POST['submit'])) {
    
$selected_radiobutton $_POST['option2'];
    print 
"<img src=images/2.jpg width=151 height=153 />
            <form name=form1 id=form action= >
            <label>Width</label>
            <input type=text name=width /><br />
            <label>Height</label><br />
            <input type=text name=height /><br />
            <label>Width:</label>
            <input type=text name=width /><br />
            <label>Height:</label>
            <input type=text name=height/> <br />
            </form>"
;
            
}
if (isset(
$_POST['submit'])) {
    
$selected_radiobutton $_POST['option.
                                   3'
];
    print 
"<img src=images/3.jpg width=151 height=153 />
            <form name=form1 id=form action= >
            <label>Width(mm)</label><br />
            <input type=text name=width /><br />
            <label>Height(mm)</label><br />
            <input type=text name=height /><br />
            <label>Width:</label>
            <input type=text name=width /><br />
            <label>Height:</label>
            <input type=text name=height/> <br />
            <label>Width:</label>
            <input type=text name=width /><br />
            <label>Height:</label>
            <input type=text name=height/> <br />
            </form>"
;
            
}
if (isset(
$_POST['submit'])) {
    
$selected_radiobutton $_POST['option4'];
    print 
"
    <form name=form1 id=form action= >
            <label>Width</label>
            <input type=text name=width /><br />
            <label>Height</label><br />
            <input type=text name=height />
            </form>"
;



?>