$(document).ready(function(){
            //$("#nav1").fadeIn("slow");
            $("#nav1").show();

});


function changepos(msel) {
     // auswahl wechseln
     //console.log(lastfademenu);
     if(lastfademenu != "")
         $(lastfademenu).fadeOut("slow");
     if(lastfadeimg != "") 
         $(lastfadeimg).fadeOut("slow");
     
     if(msel=='m1') {
          $("#pfeil").animate({ top: "210" } , {duration:500 , easing:"easeOutBounce"});
          $("#id_concept_content1").fadeIn("slow");
          $("#id_concept_headimg1").fadeIn("slow");
          lastfademenu='#id_concept_content1';
          lastfadeimg='#id_concept_headimg1';
          
     }
     if(msel=='m2') {
          $("#pfeil").animate({ top: "237" } , {duration:500 , easing:"easeOutBounce"});
          $("#id_concept_content2").fadeIn("slow");
          $("#id_concept_headimg2").fadeIn("slow");
          lastfademenu='#id_concept_content2';
          lastfadeimg='#id_concept_headimg2';
     }
     if(msel=='m3') {
          $("#pfeil").animate({ top: "264" } , {duration:500 , easing:"easeOutBounce"});
          $("#id_concept_content3").fadeIn("slow");
          $("#id_concept_headimg3").fadeIn("slow");
          lastfademenu='#id_concept_content3';
          lastfadeimg='#id_concept_headimg3';
     }
      // class
      document.getElementById('m1').className="concept_menu_unselect";
      document.getElementById('m2').className="concept_menu_unselect";
      document.getElementById('m3').className="concept_menu_unselect";

      document.getElementById(msel).className="concept_menu_select";
      // text
      // bild
      
}