function trim(x) {
		while (x.substring(0,1) == ' ') x = x.substring(1);
		while (x.substring(x.length - 1) == ' ') x = x.substring(0, x.length - 1);
		return x;
	}

	function isEmpty(element) {
		toTest = "" + element.value;
		toTest = trim(toTest);
		if ((toTest != "") && (toTest != "undefined")) return  false;
		return true;
	}

  function validateFields(){
	  val=true;
		fname="";
				
		val=val&&!isEmpty(document.getElementById("iduser"));
		if(!val)
		  fname="iduser";
			
		val=val&&!isEmpty(document.getElementById("nomprenom"));
		if(!val && fname=="")
 		  fname="nomprenom";		
			
		val=val&&!isEmpty(document.getElementById("adresse"));
		if(!val && fname=="")
 		  fname="adresse";				
			
		val=val&&!isEmpty(document.getElementById("numero"));
		if(!val && fname=="")
 		  fname="numéro";				
			
		val=val&&!isEmpty(document.getElementById("codepostal"));
		if(!val && fname=="")
 		  fname="code postal";				
			
		val=val&&!isEmpty(document.getElementById("localite"));
		if(!val && fname=="")
 		  fname="localite";				
			
		val=val&&!isEmpty(document.getElementById("mail"));
		if(!val && fname=="")
 		  fname="mail";				
			
		val=val&&!isEmpty(document.getElementById("pw"));
		if(!val && fname=="")
 		  fname="Mot de passe";				
			
		val=val&&!isEmpty(document.getElementById("pw2"));
		if(!val && fname=="")
 		  fname="Confirmation du mot de passe";		

		if(!val)
		  alert("La zone '"+fname+"' ne peut rester vide");		
		else {
		  frm=document.getElementById("formpasinscrit");
			frm.action="creationutilisateur.asp";
      frm.submit();
		}		 
	}