autosuggest not get the value ?????????????

value not store in hidden section or div...............
my html :

<div class="main_search_city_input_div">
//type here for search
<input type="text" onblur="hide_city_section();" autocomplete="off" value="Varanasi" id="main_search_input_field" name="main_search_input_field" style="display: block;">
//hidden input field store the city name which are selected by autosuggested result
<input type="hidden" value="temp" id="main_search_input_field_hidden" name="main_search_input_field_hidden">
//display result of hidden field
<div class="main_search_city_show_div" style="display: none;">Varanasi</div>
<div class="main_search_city_drop_down_div" style="display: block;">
//display in red color autosuggest result in div
<div onclick="city_store(this.id);" id="Bareilly" class="main_search_city_drop_down_div_inn">Bareilly</div>
<div onclick="city_store(this.id);" id="Etah" class="main_search_city_drop_down_div_inn">Etah</div>
</div>
</div>

Code (markup):

my javascript :

function city_store(a)
{
   $('#main_search_input_field_hidden').val(a);
   $('.main_search_city_show_div').html(a);
   $('.main_search_city_show_div').css("display","block");
   $('#main_search_input_field').css("display","none");
   $('.main_search_city_drop_down_div').css("display","none");
}
function hide_city_section()
{
   $('#main_search_input_field').css("display","none");
   $('.main_search_city_drop_down_div').css("display","none");
   $('.main_search_city_show_div').css("display","block");
}

Code (markup):

please help me.........................................

 

I suggest you rewrite that trainwreck - what, first of all, are you trying to do? Are you trying to show a certain content field based on what is being searched? And all of these options are already present on the page, just hidden?
If so, you can do it like this: http://jsfiddle.net/rn9ax9b5/
Note that that doesn't really autocomplete anything, it just shows matching results - an autocomplete can be done by changing the comparison to a regex-match for text entered in the input box.

 

I have to agree with @PoPSiCLe that piece of code means nothing. Where is the data? Do you preload arrays? How the search works? Are you calling an external PHP to fuzzy search a db or are you using Google Autocomplete API? If it's what I think the entire "script" can be done in 6 lines of code.