<iframe name="fr" width="96%" src="alert_search.do?method=findSys"></iframe>
<script type="text/javascript">
function show_syslog(id){
document.fr.location.href="/alert_search.do?method=findSys&id="+id;
}
</script>
<input type="button" onclick="javascript:show_syslog(1)">

document.fr.location.href = "your.html";
document.fr.location.reload();