function CheckEmail(elem,label)
{

	 var input =  document.getElementById(""+elem+"");
	 var label =  label;

	 if(input.value.length >= 0) return '     -The field "'+label+'" is mandatory.\n';

	 var check_email = emailCheck(input.value);

	 pos1=input.value.indexOf("@");
	 pos2=input.value.lastIndexOf(".");
	 pos = pos2 - pos1;

	 if(label.charAt(0) == '*') label = label.substring(1,label.length);
	 if(input.value.length <= 0) return '     -The field "'+label+'" is mandatory.\n';

	 //if ( (pos1==-1||pos1==0||pos1==input.value.length-1) || (pos2==-1||pos2==0||pos2==input.value.length-1) || (pos < 2)) return '     -Wrong e-mail format for "'+label+'" (ex: info@4your.net).\n';

	 if(!check_email) return '     -Wrong e-mail format for "'+label+'" (ex: myemail@domain.com).\n';

	 return '';
	}

/* - - - - - - - - - - - - - - - - - - - - - - -*/

	function validatemodify ()
	{
	/* 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("Wrong e-mail format (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 email doesn't seems 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("Invalid destination IP address!")
			return false
			}
		}
		return true
	}

	// Domain is symbolic name
	var domainArray=domain.match(domainPat)
	if (domainArray==null) {
		alert("Invalid domain name")
		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 e-mail address has an invalid domain extension.")
	   return false
	}*/
	if (domArr[domArr.length-1].length<2) {
	   // the address must end in a two letter or three letter word.
	   alert("The e-mail address has an invalid domain extension.")
	   return false
	}

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

	// If we've gotten this far, everything's valid!

	return true;
}


// JavaScript Document

function validatef1()
{
msg = "";
formOkay = true;

    if(document.f1.fname.value == false)  
	{
		msg = msg + "\t- First Name is required\r\n";
	    formOkay = false;
	}
	if(document.f1.lname.value == false)  
	{
		msg = msg + "\t- Last Name is required\r\n";
	    formOkay = false;
	}
	
	if(document.f1.country.value == "Please select your country")  
	{
		msg = msg + "\t- Country is required\r\n";
	    formOkay = false;
	}
	
	if(document.f1.code.value == false)  
	{
		alert("Code is required");
	}
	
	
	var emailID=document.f1.email;
	
	if ((emailID.value==null)||(emailID.value==""))
	{
		alert("Please Enter your Email Address");
		emailID.focus();
		return false;
	}

	if (echeck(emailID.value) == false)
	{
			emailID.value = "";
			emailID.focus();
			return false;
	}
    if(document.f1.activity.value == "Please select")  
	{
	{
		msg = msg + "\t- Profession is required\r\n";
	    formOkay = false;
	}
	
	
	}  
	if ( formOkay == true ) 
	{
		document.f1.action = "submit.php";
	} 
	else 
	{
		alert( "The form could not be submitted because \r\n" + msg + " \r\nPlease enter this information and try again.");
		return false;
	}
	
	
}


function validatefmodify()
{
	
	if(document.postmodify.nom.value == "" )  
	{
		alert("Please enter the first name");
		document.postmodify.nom.focus();
	    return false;
	}
	if(document.postmodify.lnom.value == "" )  
	{
		alert("Please enter the last name");
		document.postmodify.lnom.focus();
	    return false;
	}
	if(document.postmodify.activity.value == "Please select")  
	{
		alert("Please select an activity");
	    return false;
	}
	if(document.postmodify.country.value == "Please select a country")  
	{
		alert("Please select a country");
	    return false;
	}
	var emailID=document.postmodify.mail;

	if ((emailID.value==null)||(emailID.value==""))
	{
		alert("Please enter an E-mail address");
		emailID.focus();
		return false;
	}

	if (echeck(emailID.value) == false)
	{
			emailID.value = "";
			emailID.focus();
			return false;
	}
	
	
}


function echeck(str)
	{

		var at="@"
		var dot="."
		var lat=str.indexOf(at)
		var lstr=str.length
		var ldot=str.indexOf(dot)
		if (str.indexOf(at)==-1)
		{
		   alert("Invalid E-mail Address");
		   return false;
		}

		if (str.indexOf(at)==-1 || str.indexOf(at)==0 || str.indexOf(at)==lstr)
		{
		   alert("Invalid E-mail Address");
		   return false;
		}

		if (str.indexOf(dot)==-1 || str.indexOf(dot)==0 || str.indexOf(dot)==lstr)
		{
		      alert("Invalid E-mail Address");
		    return false;
		}

		 if (str.indexOf(at,(lat+1))!=-1)
		 {
		     alert("Invalid E-mail Address");
		    return false;
		 }

		 if (str.substring(lat-1,lat)==dot || str.substring(lat+1,lat+2)==dot){
		      alert("Invalid E-mail Address");
		    return false;
		 }

		 if (str.indexOf(dot,(lat+2))==-1)
		 {
		     alert("Invalid E-mail Address")
		    return false;
		 }
		
		 if (str.indexOf(" ")!=-1)
		 {
		     alert("Invalid E-mail Address");
		    return false;
		 }

 		 return true					
	}