addKinder = function(textbox, targetbox){
			target = document.getElementById(targetbox);
				target.innerHTML = "";
		if(textbox.value > 0 && textbox.value < 20){
			document.getElementById(targetbox).style.visibility="visible";
			var date = new Date();
				var currentYear = date.getFullYear();
				var backYear = currentYear-16;
				
				var option="<option value=''>----<\/option>\n";
				for(i=currentYear; i>backYear; i--){
					option += "<option value='"+i+"'>"+i+"<\/option>\n";
				}
				
			for(i=0; i<textbox.value; i++){
				document.getElementById(targetbox).innerHTML += "<span style='display:block;width:250px;'>Geburtsjahr des "+(i+1)+". Kindes: "+"\n<select class='hb_loginsystem_registerSelect' name=tx_hbloginsystem_pi1[elternAnzeigenForm][geburtsjahrKinder]["+i+"]>\n"+option+"<\/select><\/span>";
			}
		}else{
			target.innerHTML = "";
			document.getElementById(targetbox).style.visibility="hidden";
		}
	}