vb.org Archive - [vb4 how to]Fetch email just like referral id from url in register form??

Hello
Can anyone tell me how do i set email and confirm email address field on register form, from url?
Just like referral link i.e. http://www.myforum.com/register.php?referrerid=10
I will be generating links as http://www.myforum.com/register.php?...name@email.com
What i wanna do is, just like referralid is taken from url and set in referral field of register form, i wanna take email from url and set it on the filed in register form.
Now i have already done customization till register link with referral id and email generation.
All i wanna know is, how do i catch email id from url...
I mean which files i'm suppose to edit?
And yeah there is "Agree to Forum Rules" thing before registration form actually appears (And i know vbulletin uses cookies to get referral id from actual link or something like that). so please tell me how do i add email to this system?

Detailed instructions are strongly appreciated and helper will get full credits. :)

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P.S. This topic did the perfect trick in vb 3. I would like to know how do we code it for vb4, because in vb4 we gotta pre-register variables to be used in template etc. etc.
Here is code that works perfect in vb 3 :
1. add this plugin in the register_start hook.

PHP Code:


		
			
$refferalemail = $vbulletin->input->clean_gpc('g', 'refferalemail', TYPE_STR);

And replace the email input fields in register template with :

PHP Code:


		
			
<tr>

                    <td>

                        $vbphrase[email_address]:<br />

                        <input type="text" class="bginput" name="email" size="25" maxlength="50" value="$refferalemail" dir="ltr" />

                    </td>

                    <td>

                        $vbphrase[confirm_email_address]:<br />

                        <input type="text" class="bginput" name="emailconfirm" size="25" maxlength="50" value="$refferalemail" dir="ltr" />

                    </td>

                </tr>

And the form action in register_rules template with :

PHP Code:


		
			
action="register.php?do=register&amp;refferalemail=$refferalemail"

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X vBulletin 3.8.12 by vBS Debug Information
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Template Usage: (1)ad_footer_end (1)ad_footer_start (1)ad_header_end (1)ad_header_logo (1)ad_navbar_below (3)bbcode_php_printable (1)footer (1)gobutton (1)header (1)headinclude (6)option (1)post_thanks_navbar_search (1)printthread (2)printthreadbit (1)spacer_close (1)spacer_open Phrase Groups Available: global postbit showthread	Included Files: ./printthread.php ./global.php ./includes/init.php ./includes/class_core.php ./includes/config.php ./includes/functions.php ./includes/class_hook.php ./includes/modsystem_functions.php ./includes/class_bbcode_alt.php ./includes/class_bbcode.php ./includes/functions_bigthree.php Hooks Called: init_startup init_startup_session_setup_start init_startup_session_setup_complete cache_permissions fetch_threadinfo_query fetch_threadinfo fetch_foruminfo style_fetch cache_templates global_start parse_templates global_setup_complete printthread_start bbcode_fetch_tags bbcode_create bbcode_parse_start bbcode_parse_complete_precache bbcode_parse_complete printthread_post printthread_complete
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