function showDownload($owner) {
    $form = New-Object System.Windows.Forms.Form
    $form.Owner = $owner
    $form.icon = $icon
    $form.Text = "Descargar"
    $form.Width = 445
    $form.Height = 270
    $form.AutoSize = $true
    $form.StartPosition = [System.Windows.Forms.FormStartPosition]::CenterParent
    $form.MaximizeBox = $false
    $form.Font = "Microsoft Sans Serif, 9.35"
    $form.FormBorderStyle = 'FixedDialog'

    $label_url = New-Object System.Windows.Forms.Label
    $label_url.Text = "URL:"
    $label_url.AutoSize = $true
    $label_url.Location = New-Object System.Drawing.Point(20, 23)

    $text_url = New-Object System.Windows.Forms.TextBox
    $text_url.Width = 335
    $text_url.Location = New-Object System.Drawing.Point(75, 20)
    $text_url.add_TextChanged({
            $text_name.Text = getTitle -url $text_url.Text
        })
    $text_url.add_DoubleClick({
            $text_url.SelectAll();
        })

    
    $label_dest = New-Object System.Windows.Forms.Label
    $label_dest.Text = "Destino:"
    $label_dest.AutoSize = $true
    $label_dest.Location = New-Object System.Drawing.Point(20, 58)

    $text_dest = New-Object System.Windows.Forms.TextBox
    $text_dest.Text = $def_dest_dir
    $text_dest.Width = 255
    $text_dest.Location = New-Object System.Drawing.Point(75, 55)
    $text_dest.add_DoubleClick({
            $text_dest.SelectAll();
        })

    $btn_dest = New-Object System.Windows.Forms.Button
    $btn_dest.Text = "Examinar"
    $btn_dest.AutoSize = $true
    $btn_dest.Location = New-Object System.Drawing.Point(335, 53)
    $btn_dest.Add_Click({    
            $dest = selectFolder -path $def_dest_dir
            if ($dest) {
                $text_dest.Text = $dest
            }
        })


    $label_name = New-Object System.Windows.Forms.Label
    $label_name.Text = "Nombre:"
    $label_name.AutoSize = $true
    $label_name.Location = New-Object System.Drawing.Point(20, 93)
    
    $text_name = New-Object System.Windows.Forms.TextBox
    $text_name.Text = ""
    $text_name.Width = 333
    $text_name.Location = New-Object System.Drawing.Point(75, 91)
    $text_name.add_TextChanged({
            $text_name.Text = removeInvalidCharsString -name $text_name.Text
        })
    $text_name.add_DoubleClick({
            $text_name.SelectAll();
    })
    $text_name.Add_KeyDown({
            if ($_.KeyCode -eq "Enter") {
                $btn_exec.PerformClick()
            }
        })

    $check_audio = New-Object System.Windows.Forms.Checkbox 
    $check_audio.Location = New-Object System.Drawing.Point(25, 125)
    $check_audio.AutoSize = $true
    $check_audio.Text = "Solo audio"
    $check_audio.Checked = $false

    $check_shut = New-Object System.Windows.Forms.Checkbox 
    $check_shut.Location = New-Object System.Drawing.Point(25, 155)
    $check_shut.AutoSize = $true
    $check_shut.Text = "Apagar al finalizar"
    $check_shut.Checked = $false


    $btn_exec = New-Object System.Windows.Forms.Button
    $btn_exec.Text = "Descargar"
    $btn_exec.Location = New-Object System.Drawing.Point(140, 185)
    $btn_exec.Width = 150
    $btn_exec.Height = 30
    $btn_exec.Add_Click({   
            try {
                $prevCode = startAlwaysOn
                download -url $text_url.Text -out "$($text_dest.Text)\$($text_name.Text)" -audio $check_audio.Checked
            }
            finally {
                endAlwaysOn -code $prevCode
            }

            if ($check_shut.Checked) {
                shutdown -s
            }
        })
        
    $form.Controls.Add($label_url)
    $form.Controls.Add($text_url)
    $form.Controls.Add($label_dest)
    $form.Controls.Add($text_dest)
    $form.Controls.Add($btn_dest)
    $form.Controls.Add($label_name)
    $form.Controls.Add($text_name)
    $form.Controls.Add($check_audio)
    $form.Controls.Add($check_shut)
    $form.Controls.Add($btn_exec)
    $text_url.Select()

    $form.Add_Closing({
            $owner.Location = getRelativeLocation -parent $owner -child $form
            $form.Hide()
            $owner.Show()
        })
        
    [PSAppID]::SetAppIdForWindow($form.handle, "$($metadata.package).$app_name")

    $form.Add_LocationChanged({ $global:win_loc = $form.Location })
    $form.Add_Resize({          $global:win_size = $form.Size })

    $form.ShowDialog()
}