function validate_form_paypal()
{   
    valid = true;  
	var message='';
    if ( document.aspnetForm.first_name.value == "" )
    {     
		message+="Vous devez saisir le nom de l'entreprise \n";
        valid = false;
    }
	if ( document.aspnetForm.item_namef.value == "" )
    {     
		message+="Vous devez saisir le num\351ro de facture \n";
        valid = false;
    }
	if ( document.aspnetForm.amount.value == "" )
    {     
		message+="Vous devez saisir le montant \340 payer \n";
        valid = false;
    }
	
	if (valid==false)alert(message);
	else
	document.aspnetForm.submit();
    return valid;
}

function validate_form_paypal_en()
{
    valid = true;  
	var message='';
    if ( document.aspnetForm.first_name.value == "" )
    {     
		message+="Business Name needed\n";
        valid = false;
    }
	if ( document.aspnetForm.item_namef.value == "" )
    {     
		message+="Invoice Number needed \n";
        valid = false;
    }
	if ( document.aspnetForm.amount.value == "" )
    {     
		message+="Amount needed \n";
        valid = false;
    }
	if (valid==false)alert(message);
	else
	document.aspnetForm.submit();

    return valid;
}


function concatener()
{  

if (document.aspnetForm.last_name.value) 
document.aspnetForm.item_name.value=document.aspnetForm.first_name.value+' / '+document.aspnetForm.last_name.value+' / '+document.aspnetForm.item_namef.value;
else
document.aspnetForm.item_name.value=document.aspnetForm.first_name.value+' / '+document.aspnetForm.item_namef.value;
}