function insertion(editeur, content, nature, repdeb, repfin) {

	var input = document.forms[editeur].elements[content];

	input.focus();



	if(typeof document.selection != 'undefined') {

		var range = document.selection.createRange();

		var insText = range.text;

	}

	else if(typeof input.selectionStart != 'undefined') {

		var start = input.selectionStart;

		var end = input.selectionEnd;

		var insText = input.value.substring(start, end);

	}

	else {

		var insText = prompt("Veuillez entrer le texte à formater:");

	}

	

	if (nature == "lien") {

		var deblien = prompt('URL : ','http://');

		var repdeb = '<a href="' + deblien + '">';

		var repfin = '</a>';

	}

	else if (nature == "img") {

		var pagedesti = 'index.php?upl=img&ser=1';

		window.open(pagedesti,'image','width=720, height=600, statut=0, toolbar=0, location=0, menubar=0, scrollbars=1');

	}

	else if (nature == "pdf") {

		var pagedesti = 'index.php?upl=doc&ser=1';

		window.open(pagedesti,'image','width=720, height=600, statut=0, toolbar=0, location=0, menubar=0, scrollbars=1');

	}

	else if (nature == "son") {

		var pagedesti = 'index.php?upl=son&ser=1';

		window.open(pagedesti,'image','width=720, height=600, statut=0, toolbar=0, location=0, menubar=0, scrollbars=1');

	}

	else if (nature == "list") {

		var debliste = prompt('Première ligne ? O / N','O');

		var finliste = prompt('Dernière ligne ? O / N','N');

		if (debliste == "O") {

			var repdeb = '<ul><li>';

		}

		else {

			var repdeb = '<li>';

		}

		if (finliste == "O") {

			var repfin = '</li></ul>';

		}

		else {

			var repfin = '</li>';

		}

	}

	else {

		var repdeb = repdeb;

		var repfin = repfin;

	}

	



	if(typeof document.selection != 'undefined') {

		range.text = repdeb + insText + repfin;

		range = document.selection.createRange();

		if (insText.length == 0) {

			range.move('character', -repfin.length);

		} 

		else {

			range.moveStart('character', repdeb.length + insText.length + repfin.length);

		}

		range.select();

	}

	else if(typeof input.selectionStart != 'undefined') {

		input.value = input.value.substr(0, start) + repdeb + insText + repfin + input.value.substr(end);

		var pos;

		if (insText.length == 0) {

			pos = start + repdeb.length;

		}

		else {

			pos = start + repdeb.length + insText.length + repfin.length;

		}

		input.selectionStart = pos;

		input.selectionEnd = pos;

	}

	else {

		var pos;

		var re = new RegExp('^[0-9]{0,3}$');

		while(!re.test(pos)) {

			pos = prompt("Insertion à la position (0.." + input.value.length + "):", "0");

		}

		if(pos > input.value.length) {

			pos = input.value.length;

		}

		var insText = prompt("Veuillez entrer le texte à formater:");

		input.value = input.value.substr(0, pos) + repdeb + insText + repfin + input.value.substr(pos);

	}

}