Bu şekilde istiyosun sanırım
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Iletisim Formu</title>
</head>
<body bgcolor="#000000">
<form id="form1" name="form1" method="post" action="iletisim.php">
<table width="59%" border="0">
<tr>
<td width="32%">
<input name="isim" type="text" id="isim" value="Adınız" onclick="this.value='';" onblur="if(this.value != ''){ this.value = this.value ; this.onclick = '' } else { this.value = 'Adınız' ;}" /></td>
<td width="32%"> <input name="eposta" type="text" id="eposta" value="E-Mail Adresiniz" onclick="this.value='';" onblur="if(this.value != ''){ this.value = this.value ; this.onclick = '' } else { this.value = 'E-Mail Adresiniz' ;}" /></td>
<td width="36%"> <input name="konu" type="text" id="konu" value="Konu" onclick="this.value='';" onblur="if(this.value != ''){ this.value = this.value ; this.onclick = '' } else { this.value = 'Konu' ;}" />
</td></tr>
<tr>
<td colspan="3">
<textarea name="mesaj" id="mesaj" cols="65" rows="5" onclick="this.value='';" onblur="if(this.value != ''){ this.value = this.value ; this.onclick = '' } else { this.value = 'Mesajınız' ;}">Mesajiniz</textarea>
</td>
</tr>
<tr>
<td colspan="3">
<div align="center">
<input type="submit" name="gonder" id="gonder" value="- Gönder - " />
<input type="reset" name="temizle" id="temizle" value="- Temizle -" />
</div>
</td>
</tr>
</table>
</form>
</body>
</html>