function checkForm(form) {
                var elem = form.elements
                for (var i = 0; i < elem.length; i++) {
                        if (elem[i].className == 'verplicht' && elem[i].value == '') {
                                alert('Het veld '+ elem[i].name + ' is niet ingevuld.')
                                return false
                        }
                }
                return true
        }  document.write('<div style="background: 80ff80; width: 60%;"><form method=post action=bestelformulier.php onsubmit="return checkForm(this)" >	<table width="100%" cellpadding=10px style="color:#000000; font-family:arial; font-size:12pt">		<tr>			<td valign=top><strong>Bragel Bestelformulier</strong>			</td>			<td valign=top>Per stuk &euro;&nbsp; 20,00 (incl verzendkosten binnen Nederland</td>			<td valign=top>&nbsp;</td>		</tr>	</table><br /><br /><table width="60%" cellpadding="10px" style="color:#000000; font-family:arial; font-size:12pt">		<tr>			<td>Naam&nbsp;*</td>			<td><input class="verplicht" type=text name=naam style="background-color:#ffffff" /></td>		</tr>		<tr>			<td>Email&nbsp;*</td>			<td><input class="verplicht" type=text name=email style="background-color:#ffffff" /></td>		</tr>		<tr>			<td>Adres&nbsp;*</td>			<td><input class="verplicht" type=text name=adres style="background-color:#ffffff" /></td>		</tr>		<tr>			<td>Postcode&nbsp;*</td>			<td><input class="verplicht" type=text name=postcode style="background-color:#ffffff" /></td>		</tr>		<tr>			<td>Woonplaats&nbsp;*</td>			<td><input class="verplicht" type=text name=woonplaats style="background-color:#ffffff" /></td>		</tr>		<tr>			<td>Telefoon</td>			<td><input  type=text name=telefoon style="background-color:#ffffff" /></td>		</tr>		<tr>			<td valign=top>Opmerking</td>			<td><textarea  style="background-color:#ffffff" name=opmerking cols=40 rows=8></textarea></td>		</tr>		<tr>			<td colspan=2><input type=submit name=submit value=Bestel /> <input type=reset value=Wis /></td>		</tr>	</table></form></div>');