// start check email for email signup form
function emod_EmailAddress(field){
	if  (field.value.search("@") == -1 || field.value.search("[.*]") == -1){
		alert ("Please enter a valid email address.");
		field.focus();
		return false;
	}
return true;
}
function leaveNumbers(formfield){
	var newstring = '';
	var valid = "0123456789";
	var j = formfield.value.length;
	var formvalue = formfield.value;
	for(var i=0;i<j;i++){
		temp = formvalue.substring(i,i+1);
		if (valid.indexOf(temp)!=-1){
			newstring = newstring + temp;
		}
	}
	formfield.value = newstring;
	if (!(newstring.length==0 || newstring.length>=10)){
		alert('Please enter at least 10 digits of your  number.');
		return false;
	}else{
		return true;
	}
}

function validate(form){
	var rFields = form.requiredfields.value.split(':');
	for (i=0; i<rFields.length; i++){
		if ( form.elements[rFields[i]].type != "select-one" && form.elements[rFields[i]].length){
			thisfield = form.elements[rFields[i]];
			checked=-1;
			for (j=0; j<thisfield.length; j++){
				if (thisfield[j].checked==true){
					checked=1;
				}
			}
			if (checked==-1){
				alert ("Please make sure all required fields are completed.");
				return false;
			}
		}else if ( form.elements[rFields[i]].value=='' || form.elements[rFields[i]].value.length==0 ){ 
			alert ("Please make sure all required fields are completed.");
			form.elements[rFields[i]].focus();
			return false;
		}
	}
	
					
	if (!emod_EmailAddress(form.email)){
		return false;
	}


	if (!leaveNumbers(form.mobile)){
		return false;
	}


	if (document.getElementById('submitbutton')){
		document.getElementById('submitbutton').value = 'Please Wait...';
		document.getElementById('submitbutton').disabled = true;
	}
		
	return true;
}

// end email check for email signup form



// start check email


function emailCheck (emailStr) {
/* 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=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/
/* The following string represents an atom (basically a series of
   non-special characters.) */
var atom=validChars + '+'
/* The following string represents one word in the typical username.
   For example, in john.doe@somewhere.com, john and doe are words.
   Basically, a word is either an atom or quoted string. */
var word="(" + atom + "|" + quotedUser + ")"
// The following pattern describes the structure of the user
var userPat=new RegExp("^" + word + "(\\." + word + ")*$")
/* 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("Email address seems incorrect (check @ and .'s)")
	return false
}
var user=matchArray[1]
var domain=matchArray[2]

// See if "user" is valid 
if (user.match(userPat)==null) {
    // user is not valid
    alert("The username doesn't seem to be valid.")
    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) {
    // this is an IP address
	  for (var i=1;i<=4;i++) {
	    if (IPArray[i]>255) {
	        alert("Destination IP address is invalid!")
		return false
	    }
    }
    return true
}

// Domain is symbolic name
var domainArray=domain.match(domainPat)
if (domainArray==null) {
	alert("The domain name doesn't seem to be valid.")
    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) {
   // the address must end in a two letter or three letter word.
   alert("The address must end in a three-letter domain, or two letter country.")
   return false
}

// Make sure there's a host name preceding the domain.
if (len<2) {
   var errStr="This address is missing a hostname!"
   alert(errStr)
   return false
}

// If we've gotten this far, everything's valid!
return true;
}

//end check email