function trim(str){
	return str.replace(/^\s+|\s+$/g,'');
    }

function validation_js(){

 if(trim(document.envoyez_ami.nom.value)==""){
     /*document.envoyez_ami.nom.style.backgroundColor="#FF4F4F";*/
      document.getElementById("nom_error").innerHTML="←";
     }
     else {
       /*document.envoyez_ami.nom.style.backgroundColor="white";*/
       document.getElementById("nom_error").innerHTML="";
     }


      if(trim(document.envoyez_ami.emailSender.value)==""){
     /*document.envoyez_ami.emailSender.style.backgroundColor="#FF4F4F";*/
      document.getElementById("emailSender_error").innerHTML="←";
     }
     else {
       /*document.envoyez_ami.emailSender.style.backgroundColor="white";*/
       document.getElementById("emailSender_error").innerHTML="";
     }

  if(trim(document.envoyez_ami.email.value)==""){
     /*document.envoyez_ami.email.style.backgroundColor="#FF4F4F";*/
     document.getElementById("email_error").innerHTML="←";
     }
     else {
       /*document.envoyez_ami.email.style.backgroundColor="white";*/
        document.getElementById("email_error").innerHTML="";
       }

    if(trim(document.envoyez_ami.message.value)==""){
     /*document.envoyez_ami.message.style.backgroundColor="#FF4F4F";*/
     document.getElementById("message_error").innerHTML="←";
     }
     else {
       /*document.envoyez_ami.message.style.backgroundColor="white";*/
       document.getElementById("message_error").innerHTML="";
       }
}




function xhr(){
var xmlHttp=null;
try{xmlHttp=new XMLHttpRequest();}
catch (e){
try{xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");}
catch (e){xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}


o= new xhr()
function validation(){
var params="nom="+document.envoyez_ami.nom.value+"&email="+document.envoyez_ami.email.value+"&emailSender="+document.envoyez_ami.emailSender.value+"&message="+document.envoyez_ami.message.value+"&id="+Math.random();
o.open("post","validation_recommander_ami.php?",true)
o.setRequestHeader('If-Modified-Since','Wed, 05 Apr 2006 00:00:00 GMT');
o.setRequestHeader('Content-Type','application/x-www-form-urlencoded');
o.setRequestHeader("Content-length", params.length);
o.send(params)
o.onreadystatechange=function(){
 /*if(o.readyState==1){document.getElementById("nom_error").innerHTML="..."}*/
   if (o.readyState == 4 ) {
  /* validation_js()*/
   if(trim(document.envoyez_ami.nom.value)!=="" && trim(document.envoyez_ami.emailSender.value)!=="" && trim(document.envoyez_ami.email.value)!=="" && trim(document.envoyez_ami.message.value)!==""){
      var div=document.getElementById('ajax_responseText')
       div.innerHTML = o.responseText;
       div.style.display="block";
      document.getElementById('envoyez_ami').style.display="none";
             }

       }
   }
}