var myMenu = new UvumiDropdown("asdf",{
duration:250, //default was 250ms
transition:Fx.Transitions.linear //default was Fx.Transitions.linear
}); 

//effacer le champ de texte recherche rapide si on clique dans le champ (focus(
function myFocus(element) {
     if (element.value == element.defaultValue) {
       element.value = '';
     }
   }
   function myBlur(element) {
     if (element.value == '') {
       element.value = element.defaultValue;
     }
   }