$(document).ready(function(){

/****************** navigation top ***********************************/
    $(".mainnav img").hover(
    function(){
      this.src = this.src.replace("_grau","_blau");
    },
    function(){
      this.src = this.src.replace("_blau","_grau");
    });
    
/****************** scrollbarer Bereich ***********************************/
    $('#content').jScrollPane({showArrows:true});
    $('#content-default').jScrollPane({showArrows:true});
    $('#content-2subheadlines').jScrollPane({showArrows:true});
    $('#content-no-subheadlines').jScrollPane({showArrows:true});
    $('#content-default-news').jScrollPane({showArrows:true});

/****************** downloads preview  ***********************************/
    $(".download h5").toggle(
    function(){
      $(this).siblings('.preview-image').css('display','block');
      //$('.preview-image').css('display','block');
    },
    function(){
      $('.preview-image').css('display','none');
    });
});