Создание полей по кнопке

 
<div id="child">
				<table border=0 cellspacing=0 cellpadding=3>
				<tr>
                    <td width="300" valign="top">
                        <strong>{$LANG.CHILD_NAME}: </strong><br />
                    </td>
					<td valign="top">
							<input name="childname" type="text" class="text-input" id="childname" style="width:300px" value="{$usr.childname|escape:'html'}" />
					</td>
                </tr>
				<tr>
                    <td valign="top"><strong>{$LANG.CHILDSEX}:</strong></td>
                    <td valign="top">
                        <select name="childsex" id="childsex" style="width:307px" >
                            <option value="0" {if $usr.gender==0} selected {/if}>{$LANG.NOT_SPECIFIED}</option>
                            <option value="m" {if $usr.gender=='m'} selected {/if}>{$LANG.MALES}</option>
                            <option value="f" {if $usr.gender=='f'} selected {/if}>{$LANG.FEMALES}</option>
                        </select>
                    </td>
                </tr>
				<tr>
                    <td valign="top"><strong>{$LANG.CHILDBIRTH}:</strong> </td>
                    <td valign="top">
                        {dateform seldate1=$usr.childbirthdate}
                    </td>
                </tr>
				    <td width="300" valign="top">
                        <strong>{$LANG.CHILDDISEASES}:</strong><br />
                    </td>
                    <td valign="top">
                        <input name="childdiseases" type="text" class="text-input" id="childdiseases" style="width:300px" value="{$usr.childdiseases}"/>
                    </td>
				<tr>
						<td valign="top"><strong>{$LANG.BABYTOOTH}:</strong> </td>
						<td valign="top">
							{dateform seldate7=$usr.babytooth}
						</td>
                </tr>
				</table>
				 <input name="add" type="button" value="Добавить ребенка">
		</div>