function addCopyrightInfo() {
//Get the selected text and append the extra info
var selection, selectedNode, html;
if (window.getSelection) {
var selection = window.getSelection();
if (selection.rangeCount) {
selectedNode = selection.getRangeAt(0).startContainer.parentNode;
var container = document.createElement("div");
container.appendChild(selection.getRangeAt(0).cloneContents());
html = container.innerHTML;
}
}
else {
console.debug("The text [selection] not found.")
return;
}

// Save current selection to resore it back later.
var range = selection.getRangeAt(0);

if (!html)
html = '' + selection;

html += "<br/><br/><small><span>Bu içerik </span><a target='_blank' title='" + document.title + "' href='" + document.location.href + "'>" + document.title + "</a> sitesinden alınmıştır.</small><br/>";
var newdiv = document.createElement('div');

//hide the newly created container
newdiv.style.position = 'absolute';
newdiv.style.left = '-99999px';

// Insert the container, fill it with the extended text, and define the new selection.
selectedNode.appendChild(newdiv); // *For the Microsoft Edge browser so that the page wouldn't scroll to the bottom.

newdiv.innerHTML = html;
selection.selectAllChildren(newdiv);

window.setTimeout(function () {
selectedNode.removeChild(newdiv);
selection.removeAllRanges();
selection.addRange(range); // Restore original selection.
}, 5); // Timeout is reduced to 10 msc for Microsoft Edge's sake so that it does not blink very noticeably.
}

document.addEventListener('copy', addCopyrightInfo);