function securityCodeChange()
{
    var securityIMG = document.getElementById('securityIMG');
    var ranNum= Math.round(Math.random()*10000); 
    securityIMG.src = "../library/securityCodeChange.php?"+ranNum;
}

function cdestek() {
window.open('cdestek/cli_msg_giris.php','700x600','toolbar=yes,status=no,scrollbars=yes,location=no,menubar=yes,directories=no,width=700,height=600');
}