// JavaScript - Methodenerweiterung der String-Klasse
// String s an Stelle idx einfügen und rem Zeichen löschen.
// rem normalerweise immer = 0
String.prototype.splice = function( idx, rem, s ) {
    return (this.slice(0,idx) + s + this.slice(idx + Math.abs(rem)));
};

// Ersetzungslogik: <a href="[LINK]" target="_blank">[LINK]</a>
var insertString1 = "<a href=\"";
var insertString2 = "\"  target=\"_blank\">";
var insertString3 = "</a>";

// JavaScript-Methode - URLs im Text zu Hyperlinks machen
function parseTextToLinks(text){
	var positionOffset;
	var startPos;
	var endPos;

	// Regulärer Ausdruck - Linkerkennung
	var regex = XRegExp.globalize(/\b((?:[a-z][\w-]+:(?:\/{1,3}|[a-z0-9%])|www\d{0,3}[.]|[a-z0-9.\-]+[.][a-z]{2,4}\/)(?:[^\s()<>]+|\(([^\s()<>]+|(\([^\s()<>]+\)))*\))+(?:\(([^\s()<>]+|(\([^\s()<>]+\)))*\)|[^\s`!()\[\]{};:\'\".,<>?]))/);
	regex.global;

	// Hilfsvariablen
	var newText = text;
	positionOffset = 0;

	while (match = regex.exec(text)) {
		startPos = match.index;
		endPos = startPos + match[0].length;

		newText = newText.splice(startPos + positionOffset, 0, insertString1);
		positionOffset += insertString1.length;

		newText = newText.splice(endPos + positionOffset, 0, insertString2);
		positionOffset += insertString2.length;

		newText = newText.splice(endPos + positionOffset, 0, match[1]);
		positionOffset += match[1].length;

		newText = newText.splice(endPos + positionOffset, 0, insertString3);
		positionOffset += insertString3.length;
	}
	return newText;
}