function isEmail(strSaisie) {

        var verif = /^[^@]+@(([\w\-]+\.){1,4}[a-zA-Z]{2,4}|(([01]?\d?\d|2[0-4]\d|25[0-5])\.){3}([01]?\d?\d|2[0-4]\d|25[0-5]))$/
        return ( verif.test(strSaisie) );

    }

function controlerDonnees(obj){
    for ( var i = 0 ; i < obj.elements.length ; i++ ) {
        if(obj.elements[i].title.length > 0 && ( obj.elements[i].type == 'text' || obj.elements[i].type == 'textarea' || obj.elements[i].type == 'checkbox')){
            if(obj.elements[i].type == 'checkbox' && obj.elements[i].checked == false){
                alert("You haven't selected: " + obj.elements[i].title);
                return false;
            }
            if(obj.elements[i].value.length <= 0){
                alert("Please fill out: " + obj.elements[i].title);
                obj.elements[i].focus();
                return false;
            }else{
                if(obj.elements[i].title == 'E-mail'){
                    if(!isEmail(obj.elements[i].value)){
                        alert("Incorrect email ");
                        obj.elements[i].focus();
                        return false;
                    }
                }
            }
        }
    }

    return true;
}