// JavaScript Document
function displayBlock(id){
	document.getElementById(id).style.display='block'
}
function closeBlock(id){
	document.getElementById(id).style.display='none'
}
	function myVerifMail(mail) {
	var email = document.getElementById(mail).value;
	var posat = email.indexOf('@');
	var lstposat = email.lastIndexOf('@');
	var longueur = email.length;
	var splitMail = email.split('@');
	var username = splitMail[0];
	var domaine = '';
	var pospt = -1;
	var lstpospt = -1;
	if (posat != -1) {
	  domaine = splitMail[1];
	  pospt = domaine.indexOf('.');
	  lstpospt = domaine.lastIndexOf('.');
	}
	var count = 0;
	var nbErrors = 0;
	var bool = false;

	if (posat == -1) {
	  nbErrors++;
	}
	
	if (posat != lstposat) {
	  nbErrors++;
	}
	
	if (username == '') {
	  nbErrors++;
	}
	
	if (domaine == '') {
	  nbErrors++;
	}
	
	if (pospt == -1 || pospt == 0) {
	  nbErrors++;
	}
	
	if (lstpospt == (domaine.length - 1)) {
	  nbErrors++;
	}
	
	for (var i = 0; i < domaine.length; i++) {
	  var ch = domaine.substring(i, i+1);
	  if (ch == '.')
	    count++;
	}
	
	if (count > 2) {
	  nbErrors++;
	}
	
	if (nbErrors == 0) {
	  bool = true;
	} else {
	  bool = false;
	}
	   return bool;
}