//login validation
function validate(){
    var txtUname = document.getElementById('txtUID');
    if(txtUname.value.trim() == ""){
        alert('User ID field cannot be blank left. !!');
        return false;
    }
    var Password = document.getElementById('txtPassword');
    if(Password.value.trim() == ""){
        alert('Password field cannot be blank left. !!');
        return false;
    }
}