$options_panel->OpenTab('options_1');
/**
* Add fields to your admin page first tab
*
* Simple options:
* input text, checbox, select, radio
* textarea
*/
//title
$options_panel->Title(__("Simple Options", "apc"));
//An optionl descrption paragraph
$options_panel->addParagraph(__("This is a simple paragraph", "apc"));
//text field
$options_panel->addText('text_field_id', array('name' => __('My Text ', 'apc'), 'std' => 'text', 'desc' => __('Simple text field description', 'apc')));
//textarea field
$options_panel->addTextarea('textarea_field_id', array('name' => __('My Textarea ', 'apc'), 'std' => 'textarea', 'desc' => __('Simple textarea field description', 'apc')));
//checkbox field
$options_panel->addCheckbox('checkbox_field_id', array('name' => __('My Checkbox ', 'apc'), 'std' => true, 'desc' => __('Simple checkbox field description', 'apc')));
//select field
$options_panel->addSelect('select_field_id', array('selectkey1' => 'Select Value1', 'selectkey2' => 'Select Value2'), array('name' => __('My select ', 'apc'), 'std' => array('selectkey2'), 'desc' => __('Simple select field description', 'apc')));
//radio field
$options_panel->addRadio('radio_field_id', array('radiokey1' => 'Radio Value1', 'radiokey2' => 'Radio Value2'), array('name' => __('My Radio Filed', 'apc'), 'std' => array('radiokey2'), 'desc' => __('Simple radio field description', 'apc')));
/**
* Close first tab
*/
$options_panel->CloseTab();
/**
* Open admin page Second tab
*/
$options_panel->OpenTab('options_2');
/**
