--- a/client/js/main.js	Sun Jan 11 19:46:47 2015 +0100
+++ b/client/js/main.js	Sun Jan 11 20:43:48 2015 +0100
@@ -306,6 +306,12 @@
 Renkan.prototype.setSearchEngine = function(_key) {
     this.search_engine = this.search_engines[_key];
     this.$.find(".Rk-Search-Current").attr("class","Rk-Search-Current " + this.search_engine.getBgClass());
+    var listClasses = this.search_engine.getBgClass().split(" ");
+    var classes = "";
+    for	(var i= 0; i < listClasses.length; i++) {
+        classes += "." + listClasses[i];
+    }
+    this.$.find(".Rk-Web-Search-Input.Rk-Search-Input").attr("placeholder", this.translate("Chercher dans ") + this.$.find(".Rk-Search-List "+ classes).html());
 };
 
 Renkan.prototype.resizeBins = function() {