function empty_field()
{ 
		document.getElementById("mail_newsletter").value =""; 

}
 

function gotoValidate_newsletter()
{
		//alert(window.document.forms[0].email_client.value);
		
		 $email_client = unknown_caracter_mail(document.getElementById("mail_newsletter").value);
		
		//alert (document.getElementById("mail_newsletter").value);
		
		 if ( ($email_client == false) ){
			 		
					alert ("Saisie incorrecte !");
					
					document.getElementById("mail_newsletter").value = "";
					parent.location.href = "index.php" ;
					
					return false;
		 }else{
			 	$link = "newsletter.php?mail_news=" + document.getElementById("mail_newsletter").value ;
				//alert ($link);
			 	parent.location.href = $link ;
			 	return true;
				
		 } 
		 

}

function unknown_caracter_mail($string)
{
	//alert($string);
	$caracter = $string.toLowerCase();
	//alert($caracter);
	$return = true;
	
	if ($caracter.indexOf('html', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}	 
	
	if ($caracter.indexOf(';', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}	
	
	if ($caracter.indexOf('!', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}	

	if ($caracter.indexOf('php', 0)!= -1)
	{
		$return = false;	
		 //alert ('2');
	}
	
	if ($caracter.indexOf('script', 0)!= -1)
	{
		$return = false;	
		 //alert ('3');
	}
	if ($caracter.indexOf(';', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}

	if ($caracter.indexOf(',', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}
	
	if ($caracter.indexOf('!', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}	 
	if ($caracter.indexOf('/', 0)!= -1)
	{
		$return = false;	
		 //alert ('4');
	}
	 
	 if ($caracter.indexOf('<', 0)!= -1)
	{
		$return = false;	
		 //alert ('5');
	}

	 if ($caracter.indexOf('>', 0)!= -1)
	{
		$return = false;	
		// alert ('5');
	}

	if ($caracter.indexOf('java', 0) != -1)
	{
		$return = false;	
		// alert ('6');
	}	 	

	if ($caracter.indexOf('delete', 0) != -1)
	{
		$return = false;	
		// alert ('7');
	}	 
	
	if ($caracter.indexOf('?', 0) != -1)
	{
		$return = false;	
		// alert ('7');
	}	
	
	if ($caracter.indexOf('drop', 0) != -1)
	{
		$return = false;	
		// alert ('8');
	}	 

	if ($caracter.indexOf('select', 0) != -1)
	{
		$return = false;	
		// alert ('9');
	}

	if ($caracter.indexOf('@', 0) == -1)
	{
			$return = false;	
			//alert ('10_1');
	}else{
			if ($caracter.indexOf('.', $caracter.indexOf('@', 0)) == -1)
			{
					$return = false;	
					//alert ('10');	
			}
	}


	return $return;

}




function gotoValidate_account2()
{
		//alert(window.document.forms[0].email_client.value);
		
		$pass_client = unknown_caracter2(window.document.forms[0].pass_client.value);
		$email_client = unknown_caracter2(window.document.forms[0].email_client.value);
		
		//alert ($email_client);
		
		 if ( ($email_client == false) || ($pass_client == false) ){
			 		
					alert ("Saisie incorrecte !");
					
					window.document.forms[0].email_client.value = "";
					window.document.forms[0].pass_client.value = "";
					
					return false;
		 }else{
			 	return true;
		 }
		 

}

function unknown_caracter2($string)
{
	//alert($string);
	$caracter = $string.toLowerCase();
	//alert($caracter);
	$return = true;
	//alert ('un function');
	
	if ($caracter.indexOf('html', 0) != -1)
	{
		$return = false;	
		// alert ('1');
	}	 
	 
	if ($caracter.indexOf('php', 0)!= -1)
	{
		$return = false;	
		// alert ('2');
	}
	
	if ($caracter.indexOf('script', 0)!= -1)
	{
		$return = false;	
		// alert ('3');
	}
	if ($caracter.indexOf(';', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}

	if ($caracter.indexOf(',', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}
	
	if ($caracter.indexOf('!', 0) != -1)
	{
		$return = false;	
		 //alert ('1');
	}	 	if ($caracter.indexOf('/', 0)!= -1)
	{
		$return = false;	
		 //alert ('4');
	}
	 
	 if ($caracter.indexOf('<', 0)!= -1)
	{
		$return = false;	
		// alert ('5');
	}

	 if ($caracter.indexOf('>', 0)!= -1)
	{
		$return = false;	
		// alert ('5');
	}

	if ($caracter.indexOf('java', 0) != -1)
	{
		$return = false;	
		// alert ('6');
	}	 	

	if ($caracter.indexOf('delete', 0) != -1)
	{
		$return = false;	
		// alert ('7');
	}	 

	if ($caracter.indexOf('drop', 0) != -1)
	{
		$return = false;	
		// alert ('8');
	}	 

	if ($caracter.indexOf('select', 0) != -1)
	{
		$return = false;	
		// alert ('9');
	}	

	return $return;

}