How to select multiple items using mouse click?

Question

This is the default jQueryUI display as a Grid Layouts (demo here). I can select one at a time when using mouse pointer. I have to use Ctrl for multiple selections. How will I edit the code for multiple selections at once using just the mouse pointer?

CSS

<style>
    #feedback { font-size: 1.4em; }
    #selectable .ui-selecting { background: #FECA40; }
    #selectable .ui-selected { background: #F39814; color: white; }
    #selectable { list-style-type: none; margin: 0; padding: 0; }
    #selectable li { margin: 3px; padding: 1px; float: left; width: 100px; height: 80px; font-size: 4em; text-align: center; }
</style>

JavaScript

<script>
    $(function() {
        $( "#selectable" ).selectable();
    });
</script>     

HTML

 <div class="demo"> 
   <ol id="selectable">
     <li class="ui-state-default">1</li>
     <li class="ui-state-default">2</li>
     <li class="ui-state-default">3</li>
     <li class="ui-state-default">4</li>
     <li class="ui-state-default">5</li>
     <li class="ui-state-default">6</li>
     <li class="ui-state-default">7</li>
     <li class="ui-state-default">8</li>
     <li class="ui-state-default">9</li>
     <li class="ui-state-default">10</li>
     <li class="ui-state-default">11</li>
     <li class="ui-state-default">12</li>
   </ol>
 </div><!-- End demo -->
 
 <div class="demo-description">
   <p>To arrange selectable items as a grid, give them identical dimensions and float them using CSS.</p>
 </div><!-- End demo-description -->

Answer 1

Found This Code Online. Is that what you are asking for?

Multiple Select With Ctrl