/*
V1.2 - 2004-07-17
(c)DeLucaMarketing, Marco De Luca

Syntax for the HTML file: url[?uns*][?e-mail]
 
e.g.:        http://www.yourdomain.com/mail.html?mail@maildomain.com?unsubscribe
also valid:  http://www.yourdomain.com/mail.html?mail@maildomain.com?uns
also valid:  http://www.yourdomain.com/mail.html?mail@maildomain.com?subscribe
*/
var addr = location.search.split("?");
function fill_form()
{
	window.status = addr.length;
	if (addr.length >= 2)
		document.mailform.email.value = addr[1];
	if (addr.length >= 3)
		if (addr[2].substring(0,3) == "uns")
			document.mailform.sub_or_unsub.selectedIndex = 1;
}
onload = fill_form;

function chkEmail(email)
{
	if (email.length>0)
	{
		i   = email.indexOf("@");
		j   = email.indexOf(".",i);
		k   = email.indexOf(",");
		kk  = email.indexOf(" ");
		jj  = email.lastIndexOf(".")+1;
		len = email.length;

		if ((i>0) && (j>(i+1)) && (k==-1) && (kk==-1) && (len-jj >=2) && (len-jj<=4))
			return true;
	}
	return false;
}