var showLogin=function(e){


    var myAnim = new YAHOO.util.Anim('loginH');
    //myAnim.attributes.height = { to: 140 };
      myAnim.attributes.opacity =  {from: 0, to: 1 } ;
    
    myAnim.duration = 0.8;
    myAnim.method = YAHOO.util.Easing.easeOut;
    myAnim.animate();
    YAHOO.util.Dom.setAttribute("loginLink","onclick","closeLogin()");
    YAHOO.util.Dom.setAttribute("loginImage","src","images_perso/minus.png");

      }

    var closeLogin=function(e){

    var myAnim = new YAHOO.util.Anim('loginH');
   // myAnim.attributes.height = { to: 0 };
        myAnim.attributes.opacity =  {from: 1, to: 0 } ;
    
    myAnim.duration = 0.8;
    myAnim.method = YAHOO.util.Easing.easeOut;
    myAnim.animate();
    YAHOO.util.Dom.setAttribute("loginLink","onclick","showLogin()");
       YAHOO.util.Dom.setAttribute("loginImage","src","images_perso/plus.png");

      }