<form action=xxx method=post>
<input type=hidden name=name1 value=value1>
<input type=hidden name=name2 value=value2>.....
</form>
<input type=hidden name=name1 value=value1>
<input type=hidden name=name2 value=value2>.....
</form>
<!--
function load()
{
document.form1.submit();
}
//-->
</SCRIPT>
<body onload="javascript:load()">
<FORM METHOD=POST name=form1 ACTION="the_URL_you_want_to_go">
<INPUT TYPE="hidden" name="pName1" value="123">
<INPUT TYPE="hidden" name="pName2" value="321">
</FORM>
location:1.php?a=12&b=16