/* 
listing edits
*/
function trim(str) {
var re3 = /^\s+|\s+$/g;
return str.replace(re3,'');
}
function validateform(objForm) {
var str = "";
var temp = "";
var re1 = /[^A-Z0-9]/g; 
var re2 = /[A-Z][0-9][A-Z][0-9][A-Z][0-9]/;
var zero = '0';
var o = 'O';
for (var i = 0; i < objForm.elements.length; i++ ) {
objField = objForm.elements[i];
switch (objField.name) {
case "sender_email" : objField.value = trim(objField.value);
if ( objField.value == '' ) str = "You must enter an email address!";
if( objField.value != '' && !objField.value.match(/.*\@.*\.[a-z]+/i) ) {
str = "Email address in not a valid email!";
}
break;
case "sender_email_confirmation" : 
if ( objField.value != objForm.sender_email.value ) str = "Email addresses do not match!";
break;
case "sender" : objField.value = trim(objField.value);
if ( objField.value == '' ) str = "You must enter your name!";
break;
default : break;
};
if ( str != "" ) {
alert(str);
objField.focus();
if (objField.select) objField.select();
return false;
}
} //for
return true;
}
function emailcheck (e) {
e.value = trim(e.value);
if(e.value == ""){
return true;
}
var emailStr = e.value;
/* The following pattern is used to check if the entered e-mail address
fits the user@domain format. It also is used to separate the username
from the domain. */
var emailPat=/^(.+)@(.+)$/;
/* The following string represents the pattern for matching all special
characters. We don't want to allow special characters in the address. 
These characters include ( ) < > @ , ; : \ " . [ ] */
var specialChars='\\(\\)<>@,;:\\\\\\\"\\.\\[\\]';
/* The following string represents the range of characters allowed in a 
username or domainname. It really states which chars aren't allowed. */
var validChars="\[^\\s" + specialChars + "\]";
/* The following pattern applies if the "user" is a quoted string (in
which case, there are no rules about which characters are allowed
and which aren't; anything goes). E.g. "jiminy cricket"@disney.com
is a legal e-mail address. */
var quotedUser='(\"[^\"]*\")';
/* The following pattern applies for domains that are IP addresses,
rather than symbolic names. E.g. joe@[123.124.233.4] is a legal
e-mail address. NOTE: The square brackets are required. */
var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;
/* The following string represents an atom (basically a series of
non-special characters.) */
var atom=validChars + '+';
/* The following string represents one word in the typical username.
For example, in john.doe@somewhere.com, john and doe are words.
Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")";
var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
/* The following pattern describes the structure of a normal symbolic
domain, as opposed to ipDomainPat, shown above. */
var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$");
/* Finally, let's start trying to figure out if the supplied address is
valid. */
/* Begin with the coarse pattern to simply break up user@domain into
different pieces that are easy to analyze. */
var matchArray=emailStr.match(emailPat);
if (matchArray==null) {
/* Too many/few @'s or something; basically, this address doesn't
even fit the general mould of a valid e-mail address. */
alert('That is not a valid email address.');
e.focus();
if (e.select) e.select();
return false;
}
var user=matchArray[1];
var domain=matchArray[2];
if (user.match(userPat)==null) {
alert('The username for email is invalid.');
e.focus();
if (e.select) e.select();
return false;
}
/* if the e-mail address is at an IP address (as opposed to a symbolic
host name) make sure the IP address is valid. */
var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {
for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
alert('Destination IP address for email is invalid.');
e.focus();
if (e.select) e.select();
return false;
}
}
return true;
}
var domainArray=domain.match(domainPat);
if (domainArray==null) {
alert('The domain name for email is invalid.');
e.focus();
if (e.select) e.select();
return false;
}
/* domain name seems valid, but now make sure that it ends in a
three-letter word (like com, edu, gov) or a two-letter word,
representing country (uk, nl), and that there's a hostname preceding 
the domain or country. */
/* Now we need to break up the domain to get a count of how many atoms
it consists of. */
var atomPat=new RegExp(atom,"g");
var domArr=domain.match(atomPat);
var len=domArr.length;
if (domArr[domArr.length-1].length<2 || 
domArr[domArr.length-1].length>3) {
alert('An email address must end with a three-letter domain name, or a two-letter country code.');
e.focus();
if (e.select) e.select();
return false;
}
if (len<2) {
var errStr='The email address is missing a host name.';
alert(errStr);
e.focus();
if (e.select) e.select();
return false;
}
return true;
}