jQuery Forum

I'm new with this JQuery Mobile thing. And the first problem i met in this is i can't set "selected" attr on multiple select option to "false" / unselected in JQuery mobile using Javascript.

A documentation i found told me to refreshing a select so i can manipulate it via javascript here in the bottom of it's page:
http://jquerymobile.com/demos/1.0a4.1/docs/forms/forms-selects.html

I've done it. But i don't know if i did it wrong or what. Here is my code :

1. <script type="text/javascript">
2. function SelectAll(){
3.       var select=document.getElementById('sfruit');
4.       If (select.options[1].selected == true){
5.             alert('All Selected');
6.            
7.             for (x in select.options){
8.                 if(x > 1){
9.                     if (select.options[x].selected == true){
10.                         alert(select.options[x].value+' selected');
11.                        
12.                         RefreshSelect();
13.                         select.options[x].selected == false;
14.                     }else{
15.                         alert(select.options[x].value+' unselected');
16.                     }
17.                 }
18.             }
19.         }
20.     }
21.        
22.     function RefreshSelect(){   
23.         var myselect = $("select#sfruit");
24.         myselect[0].selectedIndex = 5;
25.         myselect.selectmenu("refresh");
26.     }
27. </script>
28. 
    
29. <select onChange="SelectAll()" data-native-menu="false" id="sfruit" name="sfruit" multiple>
30.       <option>Select Fruit</option>
31.       <option value="all" selected>All</option>
32.       <option value="apple">Apple</option>
33.       <option value="orange">Orange</option>
34.       <option value="grape">Grape</option>
35.       <option value="melon">Melon</option>
36. </select>

What i actually want is when i select "All" option, other option that have been selected become unselected.
I'll attaching the image if u all still doesn't understand what i mean, later, it's already late here.

Thanks guys. And please help me. .. :)