jQuery(document).ready(function(){
    /* hide these objects */
    jQuery(".bildtausch").hover(
        function(){ jQuery(this).attr("src",  jQuery(this).attr("src").replace(/-sw.+/, ".jpg").replace(/uploads\/pics\//, "fileadmin/user_upload/icons/") ); },           
        function(){ jQuery(this).attr("src",  jQuery(this).attr("src").replace(/.jpg/, "-sw.jpg").replace(/fileadmin\/user_upload\/icons\//, "uploads/pics/") ); }
    );               
});