removeChild et formulaire dynamique php

function ouvre1() {

	//Effacement du champ

		var partie0 = document.getElementById("contenu1");

		var contenu0 = partie0.firstChild;



                partie0.removeChild(contenu0);



	//creation des variables	

		var l01 = document.createElement('table');

			l01.setAttribute("width","100%");

		var l02 = document.createElement('tr');

			l02.setAttribute("valign","top");

		var l03 = document.createElement('td');

			l03.setAttribute("width","100");

		var t04 = document.createTextNode("Vivez-vous avec:");

		var l05 = document.createElement('td');

		var l06 = document.createElement('table');

		var l07 = document.createElement('tr');

		var l08 = document.createElement('td');

		var l09 = document.createElement('label');

		var l10 = document.createElement('input');

			l10.setAttribute("type","radio");

			l10.setAttribute("name","enf19");

			l10.setAttribute("value","1");

			l10.setAttribute("id","enf19_0");

		var t11 = document.createTextNode(" tous vos enfants");

		

	//mise en forme

		l09.appendChild(t11);

		l09.insertBefore(l10,t11);

		l08.appendChild(l09);

		l07.appendChild(l08);

		l06.appendChild(l07);

		l05.appendChild(l06);

		l03.appendChild(t04);

		l02.appendChild(l05);

		l02.insertBefore(l03,l05);

		l01.appendChild(l02);

		partie0.appendChild(l01);

   }