plugin effect

Can you put your plugin up on GitHub so we can see the code?

<?php
/*
*Plugin Name:Hs Booking engine
*Description:Hs Booking Engine
*Version:1.0
*Author:Dileep
*
*/

//define('WP_DEBUG', true);

register_activation_hook(__FILE__,'hs-activate-booking-engine');
register_deactivation_hook(__FILE__,'hs-deactivation-booking-engine');

add_action('init','hs_load_script');

//loadind scripts and styles
function hs_load_script()
{

  echo '<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.10.1/themes/redmond/jquery-ui.min.css" />';

  echo '<script src="//ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>';
	echo '<script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.11.0/jquery-ui.min.js"></script>';

  /*
    wp_register_style('mystyle',plugins_url('hs-booking engine/css/jquery.ui.css'));
    wp_enqueue_style('mystyle');

    wp_register_script('myscript',plugins_url('hs-booking engine/js/jquery.js',__FILE__),'1.11.1');
    wp_enqueue_script('myscript');

    wp_register_script('myplugin', plugins_url('hs-booking engine/js/cjquery-ui.min.js', __FILE__), '1.11.0');
    wp_enqueue_script('minjquery');*/

    //wp_register_script('minjquery',plugins_url('js/jquery.js'));

   //wp_enqueue_script('myplugin');
  //wp_enqueue_script('jquery');
  //wp_enqueue_script('jquery-ui-datepicker');

	//wp_enqueue_script('custom-jquery-ui-datepicker',get_template_directory_uri().'/js/cjquery-ui.min.js',array(),'1.11.0',false);

  //wp_enqueue_script('custom-jquery-ui-datepicker',plugins_url('/js/cjquery-ui.min.js',__FILE__),array(),'1.11.0',false);
  //wp_register_style('custom-css',plugins_url('css/custom.css',__FILE__));
  ?>
		<script type="text/javascript">

			$(function() {

        //alert("Hello");

  $( "#sd" ).datepicker({
      dateFormat: "dd/mm/yy",
      //minDate: +1,
      showOn: "both",
      buttonImage: "https://jqueryui.com/resources/demos/datepicker/images/calendar.gif",
      buttonImageOnly: true,
      showAnim:"slide",
      changeMonth:true,
      changeYear:true,
      showButtonPanel:true,
      closeText:"Close",
      beforeShow: function(){
        // this gets today's date
        var theDate = new Date();
        theDate.setDate(<?php echo $checkin ?> + 2);
                // set min date as 2 days from today
        $(this).datepicker('option','minDate',theDate);
      },
          // When datepicker for start date closes run this function
      onClose: function(){
        // this gets the selected start date
        var theDate = new Date($(this).datepicker('getDate'));
        // this sets "theDate" 1 day forward of start date
        theDate.setDate(theDate.getDate() + 1);
        // set min date for the end date as one day after start date
        $('#ed').datepicker('option','minDate',theDate);
      }
    });

    $('#ed').datepicker({
      dateFormat: "dd/mm/yy",
      showOn: "both",
      buttonImage:"https://jqueryui.com/resources/demos/datepicker/images/calendar.gif",
      buttonImageOnly: true,
      showAnim:"slide",
      changeYear:true,
      changeMonth:true,
      beforeShow: function(){
        // this gets today's date
        var theDate = new Date($( "#sd" ).datepicker('getDate'));
        // sets "theDate" 2 days ahead of today
        theDate.setDate(theDate.getDate() + 1);
        // set min date as 2 days from today
        $(this).datepicker('option','minDate',theDate);
      },
      onClose:function(){

      }  

    }); 

    $("#sd").datepicker("setDate", "<?php echo isset($_POST["check_in"]) ? $_POST["check_in"] : '0' ?>");
    $("#ed").datepicker("setDate", "<?php echo isset($_POST["check_in"]) ? $_POST["check_out"] : '1' ?>");

});//.noConflict();

		</script>
		<style type="text/css">

      .cal
			{
				font-family: Arial, Helvetica, Sans-serif; font-size:13px;
				border-radius: 15px;
				width: 500px;
				border: 1px solid #ccc;
				margin-top: 20px;
			}

			img.ui-datepicker-trigger {
         		 position: relative;
          		left: -23px;
          		top: 3px;
    			}

    		.cal form
    		{
    			padding: 20px;
    		}
    		.cal .check-in
    		{
    			display: block;
    			padding: 0;
    			margin: 0;
    		}

    		.cal .check-out
    		{
    			display: block;
    			padding: 0;
    			margin: 0;
    		}

    		.cal .check-in input[type="text"]
    		{
    			padding: 8px;
    			margin-bottom: 15px
    		}

    		.cal .check-out input[type="text"]
    		{
    			padding: 8px;
    			margin-bottom: 15px
    		}

    		.cal .check-in label
    		{
    			padding: 15px;
    			width: 115px;
          float: left;

    		}

    		.cal .check-out label
    		{
    			padding: 15px;
    			width: 115px;
    			float: left;
    		}

    		.cal form button
    		{
    			margin: 15px;
    			margin-left: -21px;
    		}

        .showshortcode
        {
          position: relative;
          min-width: 255px;
          border: 1px solid #e5e5e5;
          -webkit-box-shadow: 0 1px 1px rgba(0,0,0,.04);
          box-shadow: 0 1px 1px rgba(0,0,0,.04);
          background: #fff;
        }
        .showshortcode h3{
          font-size: 14px;
          padding: 8px 12px;
          margin: 0;
          line-height: 1.4;
        }

        .showshortcode .inside{
          display: block;
        }

		</style>
	<?php
}

add_action('admin_menu','hs_booking_menu');

//plugin menu
function hs_booking_menu()
{
	add_menu_page('Booking Engine','Booking Engine','manage_options','hs-booking-engine','hs_booking_calender',plugins_url('hs-booking engine/images/calendar.gif'),99);
  add_submenu_page('hs-booking-engine','Form','Hs-Form-URL','manage_options','hs-form','hs_form_url');
  //add_submenu_page('hs-booking-engine','Settings','Hs-Settings','manage_options','hs-settings','hs_settings_shortcode');

}

//Provideing Function form url
function hs_form_url(){
  add_option('formurl','https://www.google.com');
  $result=get_option('formurl');
  //echo $result;
  //update_option('formurl',$_REQUEST['formURL']);
  ?>

    <div class="cal">
      <form method="post">
         <p>Please Provide The Form URL</p>
        <label>Form Url:</label></label><input type="text" name="formURL" id="formURL1" value="<?=$result;?>"/>
        <input type="submit" name="submit" value="Save"/>
      </form>
    </div>

  <?php
 update_form_url();
 hs_settings_shortcode();

}

//Update form action url
function update_form_url(){

  $result=get_option('formurl');
  if($_REQUEST['submit']){

    if($_REQUEST['formURL']){

      update_option('formurl',$_REQUEST['formURL']);
      echo "Updated";
      //hs_form_url();
    }
    else{
      echo "Not Updated";
    }
  }

}

//Displaying shortcode
function hs_settings_shortcode()
{

  ?>

      <div class="">
        <h3>Usage</h3>

        <div class="cal">

          <p class="">Copy & paste this code into a template file to include within your theme.</p>

<pre> <?php echo do_shortcode("[hs_calender_shortcode]"); ?> </pre>
        </div>
          <p style="padding-left:210px">(OR)</p>
        <div class="cal">
          <p>Copy & paste the shortcode directly into any WordPress post or page.</p>

<pre>[hs_calender_shortcode]</pre>
        </div>
      </div>
      <style type="text/css">
        .cal h4{
          padding: 15px;
        }

        .cal p{
          padding: 15px;
          color: #2ea2cc;
          font-weight: bold;
        }
        .cal pre{
          padding: 15px;
        }
      </style>  

  <?php
}

//Displaying Calender Widget
function hs_booking_calender()
{
  $result=get_option('formurl');
  global $title;
	?>
		<div class="cal">

			<form action="<?php echo $result ?>" method="post" id="cal-from">
  				<?php echo $title;?>

  				<div class="check-in">
  					<label>From Date:</label><input type="text" id="sd" required/>
  				</div>

  				<div class="check-out">
  					<label>To Date:</label><input type="text" id="ed" value="" required/>
  				</div>
           <label>Select Location:</label>
          <select name="country" id="country" onchange="setStates();">
              <option value="Alleppey">Alleppey</option>
              <option value="Kumarakom">Kumarakom</option>
              <option value="Kollam">Kollam</option>
              <option value="Cochin">Cochin</option>
          </select>

          <label>Select Category:</label>
          <select name="state" id="state" onchange="setCities();">
            <option value="">Please select a Country</option>
          </select>

          <label>Select Category type:</label>
          <select name="city"  id="city">
            <option value="">Please select a Country</option>
          </select>

          <button>SUBMIT</button>
			</form>
		</div>
     <script type="text/javascript">
      var states = new Array();

      states['Alleppey'] = new Array('House Boat-Deluxe','House Boat-Premium Columbia','House Boat-Luxury','Shikara','Motor Boat','Speed Boat ');
      states['Kumarakom'] = new Array('House Boat-Deluxe','House Boat-Premium','House Boat-Luxury');
      states['Kollam'] = new Array('House Boat-Deluxe');
      states['Cochin']=new Array('House Boat-Deluxe ','Other Boat ');

      // City lists
      var cities = new Array();

      cities['Alleppey'] = new Array();
      cities['Alleppey']['House Boat-Deluxe'] = new Array('1Bed','2 Bed','3 Bed','5 Bed');
      cities['Alleppey']['House Boat-Premium Columbia'] = new Array('1Bed','2 Bed','3 Bed','5 Bed');

      cities['Alleppey']['House Boat-Luxury']          = new Array('1Bed','2 Bed','3 Bed','5 Bed');
      //cities['Alleppey']['Speed Boat']=new Array();

      cities['Kumarakom'] = new Array();
      cities['Kumarakom']['House Boat-Deluxe'] = new Array('1Bed','2 Bed','3 Bed','5 Bed');
      cities['Kumarakom']['House Boat-Premium']       = new Array('1Bed','2 Bed','3 Bed','5 Bed');
      cities['Kumarakom']['House Boat-Luxury']         = new Array('1Bed','2 Bed','3 Bed','5 Bed');

      cities['Kollam'] = new Array();
      cities['Kollam']['House Boat-Deluxe'] = new Array('Any');

      cities['Cochin']=new Array();
      cities['Cochin']['House Boat-Deluxe']    = new Array('Any');
      cities['Cochin']['Other Boat']   = new Array('Any');

      function setStates() {
        cntrySel = document.getElementById('country');
        stateList = states[cntrySel.value];
        changeSelect('state', stateList, stateList);
        setCities();
      }

      function setCities() {
        cntrySel = document.getElementById('country');
        stateSel = document.getElementById('state');
        cityList = cities[cntrySel.value][stateSel.value];
        changeSelect('city', cityList, cityList);
      }

      function changeSelect(fieldID, newOptions, newValues) {
        selectField = document.getElementById(fieldID);
        selectField.options.length = 0;
        for (i=0; i<newOptions.length; i++) {
          selectField.options[selectField.length] = new Option(newOptions[i], newValues[i]);
        }
      }

      function addLoadEvent(func) {
        var oldonload = window.onload;
        if (typeof window.onload != 'function') {
          window.onload = func;
        } else {
          window.onload = function() {
            if (oldonload) {
              oldonload();
            }
            func();
          }
        }
      }

      addLoadEvent(function() {
        setStates();
      });

    </script>
	<?php 

}

//Get Shortcode
function hs_shortcode()
{
	ob_start();
	hs_booking_calender();
	return ob_get_clean();
}

add_shortcode('hs_calender_shortcode','hs_shortcode');

add_filter('widget_text', 'do_shortcode');

?>

this is my code please tell me validate or not thanx for respondin @ipstenu(Mike Epstein)