javascript คลิกปุ่มแล้วทำการ update database โดยไม่เปลี่ยนหน้า

<script>
function showclose(chkObj)
{
if( chkObj.click ) 
document.getElementById("close").disabled = false;
else 
document.getElementById("close").disabled = true;
document.getElementById("clear").disabled = true;
}
function showclear(chkObj)
{
if( chkObj.click ) 
document.getElementById("clear").disabled = false;
else 
document.getElementById("clear").disabled = true;
document.getElementById("start").disabled = true;

}
</script>