<input type=hidden name="new_page" id="new_page" runat="server" value="0">
<input type=hidden name="action" id="action" runat="server" value="">
<input type=hidden name="sort" id="sort" runat="server" value="-1">
<input type=hidden name="prev_sort" id="prev_sort" runat="server" value="-1">
<input type=hidden name="prev_dir" id="prev_dir" runat="server" value="ASC">

<script>
function on_page(page) {
	var frm =  document.getElementById("_ctl0");
	frm.action.value = "page";
	frm.new_page.value = page
	frm.submit();
}
</script>

<script>
function on_sort(col) {
	var frm = document.getElementById("_ctl0");
	frm.action.value = "sort";
	frm.sort.value = col;
	frm.submit();
}
</script>