edit_hover = new Image();
    sort_editions_hover = new Image();
    categorize_hover = new Image();
    
    edit_hover.src = "/images/forms/btn_edit.gif";
    sort_editions_hover.src = "/images/forms/btn_sorteditions_hover.gif";
    categorize_hover.src = "/images/forms/btn_categorize_hover.gif";
    
     $(document).ready(function(){ 
            $(".btn_edit").mouseenter(function(){$(this).attr("src","/images/forms/btn_edit_hover.gif")}).mouseleave(function(){$(this).attr("src","/images/forms/btn_edit.gif")});
            $(".btn_sorteditions").mouseenter(function(){$(this).attr("src","/images/forms/btn_sorteditions_hover.gif")}).mouseleave(function(){$(this).attr("src","/images/forms/btn_sorteditions.gif")});
            $(".btn_categorize").mouseenter(function(){$(this).attr("src","/images/forms/btn_categorize_hover.gif")}).mouseleave(function(){$(this).attr("src","/images/forms/btn_categorize.gif")});
           });