function verifierMail(champ) {
	var str = champ.value;
	var regexp = new RegExp("^[a-zA-Z0-9_\\-\\.]{3,}@[a-zA-Z0-9\\-_]{2,}\\.[a-zA-Z]{2,4}$", "g");
	if(!regexp.test(str)) {
		champ.focus();
		return false;
	}
	return true;
}
function okornot() {
	if(verifierMail(document.formNewsletter.email) == false) { alert("Votre adresse email est incorrecte."); return false; }
	return true;
}
function champ_email() {
	if(document.formNewsletter.email.value=='VOTRE ADRESSE EMAIL') { document.formNewsletter.email.value = ''; }
}

function champ_email_blur() {
	if(document.formNewsletter.email.value=='') { document.formNewsletter.email.value = 'VOTRE ADRESSE EMAIL'; }
}

var effet_easing = 'easeInOutExpo';

function go_to(name_ancre){

	var target_offset = $("#"+name_ancre).offset();
	var target_top = target_offset.top;	
	
	// alert('target_offset : ' + target_offset);
	// alert('target_top : ' + target_top);
	// alert('coucou');
	
	target_top = target_top - 72;
	//goto that anchor by setting the body scroll top to anchor top
	$('html, body').animate({scrollTop:target_top}, 1500, effet_easing);
	
}

// gestion du float du menu + activation menu
$(document).ready(function() {
	var $pos_top = $('#menu').offset().top + 5;

	// alert('pos_top : ' + $pos_top);

$(window).scroll(function()
	{   
		if ($(window).scrollTop() > $pos_top)   
		{
			$('#menu').addClass('menu_floater');
		}
		else
		{
			$('#menu').removeClass('menu_floater');
		}
	});
});