slet indhol på onload

<form method=\"post\" name=\"formse\" action=\"main.php\" target=\"main\" onsubmit=\"this.chat.value=this.chatvis.value;this.chatvis.value=\'\';this.chatvis.focus();\">
<input type=\"hidden\" name=\"username\" value=\"<? echo \"$username\"; ?>\">
<input type=\"hidden\" name=\"uid\" value=\"<? echo \"$uid\"; ?>\">
<input type=\"hidden\" name=\"msg\" value=\"broad\">
<input type=\"hidden\" name=\"chat\" value=\"\">
<input name=\"chat\" type=\"text\" size=\"15\" maxlength=\"300\">


Den skal slette indholdet6 når man trykker <enter> submit =)

tak tak ...