Te dejo aqui los codigos, no se donde tengo el error
Graciasss
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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Formulario</title>
<script type="text/JavaScript">
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function MM_validateForm() { //v4.0
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if (val) { nm=val.name; if ((val=val.value)!="") {
if (test.indexOf('isEmail')!=-1) { p=val.indexOf('@');
if (p<1 || p==(val.length-1)) errors+='- '+nm+' must contain an e-mail address.\n';
} else if (test!='R') { num = parseFloat(val);
if (isNaN(val)) errors+='- '+nm+' must contain a number.\n';
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} } } else if (test.charAt(0) == 'R') errors += '- '+nm+' is required.\n'; }
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</head>
<form action="mailto:palomaplvz@yahoo.es" method="post" name="form1" id="form1" onsubmit="MM_validateForm('textfield','','R','textfield2','' ,'R','textarea','','R');MM_validateForm('textfield ','','R','textfield2','','R','textarea','','R','te xtfield','','R');MM_validateForm('textfield','','R ');MM_validateForm('textfield','','R','textfield2' ,'','RisEmail','textarea','','R','textfield','','R ');return document.MM_returnValue">
<label><b><font size="2" color="#808080">Nombre
</font></b>
<input name="textfield" style="font-weight: 700" /><b> </b>
</label>
<p>
<label><b><font color="#808080" size="2">E-Mail</font></b>
<input name="textfield2" type="text" size="24" />
</label>
</p>
<p>
<label><b><font size="2" color="#808080">Comentario</font></b><br />
<textarea name="textarea" rows="3" cols="33"></textarea>
</label>
</p>
<p>
<label>
<input type="submit" name="Submit" value="Enviar" />
</label>
</p>
</form>
<p> </p>
</body>
</html>