function vote(id){
	
	var choix = null;
		
	for (i=1 ; i <= jQuery('.reponse_sondage').length ; i++){		
		if ( jQuery('#reponse_'+i)[0].checked ){
			choix = 'reponse_'+i;
		}
	}
	
	(jQuery('#chargeSondage')[0]).style.height = hauteurDiv('sondage');
	(jQuery('#sondage')[0]).style.display = "none";
	(jQuery('#chargeSondage')[0]).style.display = "block";
	
	jQuery. ajax(
		{type: "get", 
		 url: url_site + "/ajax/vote_sondage.php", 
		 data: "id=" + id + "&choix=" + choix, 
		 success: function(response){
		 			var myObject = eval('(' + response + ')');
		 			
		 			(jQuery('#fleche_verte')[0]).style.display = "none";
		 			
		 			for (i=1 ; i <= jQuery('.reponse_sondage').length ; i++){
		 				var reponse = eval("myObject.reponsesSondage.reponse_" + i);
		 				var tailleDiagramme  = reponse * 2;		 				 			
		 				(jQuery('#reponse_'+i)[0]).style.display = "none";
		 				(jQuery('#label_reponse_'+i)[0]).innerHTML = (jQuery('#label_reponse_'+i)[0]).innerHTML + '<p class="diagramme" style="width:' + tailleDiagramme + 'px"> ' + reponse + '%</p>';
		 			}
		 			
					(jQuery('#chargeSondage')[0]).style.display = "none";					
					(jQuery('#sondage label')).css("margin-left","0px");					
					(jQuery('#sondage')[0]).style.display = "block";
		 		  }
		 });
}

function hauteurDiv(bloc){
	var doc = document.getElementById(bloc);
 	if (document.all){
 		hauteur = doc.offsetHeight ;
 	}else {
 		hauteur = document.defaultView.getComputedStyle(doc, null).height;
 	}
 	return hauteur;
}