d = document;

(function(d)
{
    d.dirtyClipboard=function(e,g)
    {
        if(e)
        d(g?g:document).mouseup(function()
        {
            var c,a,b,f;
            d("span.dirty-clipboard").remove();
            if(window.getSelection)
            {
                c=window.getSelection();
                a=c.getRangeAt(0);
                b=a.cloneRange();
                b.collapse(false);
                f=d('<span class="dirty-clipboard">'+e+"</span>").css("position","absolute")[0];
                b.insertNode(f);
                a.setEndAfter(f);
                c.removeAllRanges();
                c.addRange(a)
            }
            else if(c=document.selection)
            {
                a=c.createRange();
                b=a.duplicate();
                b.collapse(false);
                if(b.htmlText != '')
                {
                    b.pasteHTML('<span class="dirty-clipboard" style="position: absolute;">'+e+"</span>");
                    a.setEndPoint("EndToEnd",b);
                    a.select();
                }
            }
            d("span.dirty-clipboard").css({overflow:"hidden",width:"1px",height:"1px"})
        }
    )}
})(jQuery);

jQuery(
function()
{
    $.dirtyClipboard("<br>&lt;a href=\""+location.href+"\"&gt;Источник&lt;/a&gt;","#descrtxt")
}
);