function ShowHideForm(element)
{
	if(document.getElementById(element).style.display == "block")
		ResetForm();
	else
		document.getElementById(element).style.display = "block";
}

function ValidMessage()
{
	var retour = false;
	
	if(document.getElementById("txt_mail").value != "" && VerificationEmail(document.getElementById("txt_mail")) &&
		document.getElementById("txt_pseudo").value != "" && 
		document.getElementById("txt_comment").value != "")
	
		retour = true;
	else
		retour = false;

	if(document.getElementById("txt_mail").value == "" || !VerificationEmail(document.getElementById("txt_mail")))
		document.getElementById("txt_mail").style.backgroundColor = '#FF8F8F';		
	if(document.getElementById("txt_pseudo").value == "")
		document.getElementById("txt_pseudo").style.backgroundColor = '#FF8F8F';		
	if(document.getElementById("txt_comment").value == "")
		document.getElementById("txt_comment").style.backgroundColor = '#FF8F8F';
	
	return retour;
}

function VerificationEmail(elm)
{
	if (elm.value.indexOf("@") != "-1" && elm.value.indexOf(".") != "-1" && elm.value != "")
	    return true;
	return false;
}

function PaintItWhite(idelement)
{
	document.getElementById(idelement).style.backgroundColor = '#FFFFFF';
}

function ResetForm()
{
	PaintItWhite("txt_mail");
	PaintItWhite("txt_pseudo");
	PaintItWhite("txt_comment");
	
	
	document.getElementById("txt_mail").value = "";
	document.getElementById("txt_pseudo").value = "";
	document.getElementById("txt_comment").value = "";
	document.getElementById('signlivre').style.display = "none";
}